{
  "manageEntity": {
    "action": "Update",
    "entityId": "781311570",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xecb85f2a8c78384996b82c6bd200c79e7468d7dc46a3698fa9fcadfc93a897d0",
    "signature": "0xf223029860bb149b97672b6db25cf3fb84c1d41df5f6a0e62d1a06c70f0f0c62614cb262a622d4f27bc0b5a2427f7c97a02565fa100450951ac26f21c09091771b",
    "signer": "0x97744BfBBCAe97856baF28EF4369eDA03BFEf5eB",
    "userId": "781311570"
  }
}