{
  "manageEntity": {
    "action": "Update",
    "entityId": "876701012",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9b4f5614e7225404a653b7f1360fa33b5fe4d74908fa6816bf98d71aff4754b6",
    "signature": "0xa3523ac20b6988db4f02460d73b61cf2a8dc4dec865c204e5b3c6da33b783ffc3e75e17e8cc73fb77001b4f2651e7130eb3d31bf9c18fa9207d0ea801d70bedd1b",
    "signer": "0xDb0EB9057C275EEf909722848EEBC794C00DF273",
    "userId": "876701012"
  }
}