{
  "manageEntity": {
    "action": "Update",
    "entityId": "715573876",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraugggxe3osdjhp25pcqute2bdx5wssuafun3ah7lnmq3ernvfpoyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":629154592},{\"type\":\"playlist\",\"playlist_id\":375592719}]}}}",
    "nonce": "0x281e09f541fa818de9f6a26019b2e5f77f77674acd8b482c3072dba82b1e8da2",
    "signature": "0x576572cc869f21c874ab0fb79e79dd114ad2f5ee2c700b57d4ce8ab25533ff104be05339238862895efd35c73f6b1169fe37041b6f70c791aa90a1e0988292fc1c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}