{
  "manageEntity": {
    "action": "Update",
    "entityId": "215130254",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xeef2714e11dccd8898285118d961999e528814d9d69012281e41ca70dfb4c94a",
    "signature": "0x4b928b5d2375977a43c57df8cfbb4948fa2ded58106ef14a3bd2e812330bdc233ec51e4332a637846f0c9ce2d2268b57e28c3bff36d658a76be68be22d68e1a71b",
    "signer": "0xD18872c434A0FAE379BC0d0Ca489Cb3F3Edd5125",
    "userId": "215130254"
  }
}