{
  "manageEntity": {
    "action": "Update",
    "entityId": "402526451",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradqimu77ejcfs4qcm6q35emb5xm7uldk4c5btfz7ebb7n62ogy7ca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":979342421},{\"type\":\"playlist\",\"playlist_id\":1104139151},{\"type\":\"playlist\",\"playlist_id\":1859762871}]}}}",
    "nonce": "0xbf33700e996df45f7ec4c990117e69788e2dba75c4a55c9a1b5d8782b5da544c",
    "signature": "0x5a74a8a389df03fa0dc0fa45e94c88c5547cca1f5f72c48ff503230d2af639693c2c092a6a724300aef4aac45f40e7408f9cd10644b2963cb1ad5d12d9214cfc1b",
    "signer": "0x3268c7e938FD368Bd958d44b728BD13025e27d63",
    "userId": "402526451"
  }
}