{
  "manageEntity": {
    "action": "Update",
    "entityId": "883736280",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3770cb81072e920824736c42d55f4cd9609941e661b84e86a7779a036f244171",
    "signature": "0xfc0b2450a874c2b46b1d22ff2c5c1cd0d7df29753234062aeebfe09cea0da8f4070bee58a67a8d23dcda21ab41505c54f965cde143d2176ac4dd06729e47f1411b",
    "signer": "0xb810b9dC05c4A70F6644b18689bfFFC0cCB34008",
    "userId": "883736280"
  }
}