{
  "manageEntity": {
    "action": "Update",
    "entityId": "216427183",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xefb5b17de57e24acfc4090094e4d15402d44d43439f476bfb8328f3c4b2a89f1",
    "signature": "0x4f7742ede08f3b8d71903cf7c5f7241ffdfb6f5d769fb3e3dbca66286c27423661f06e9f35caa51007f84d2b5528f1f8f5450abdbd28a5920810fcae3f443b2d1c",
    "signer": "0x3c30507939bFBf87FAC58ff7512A140BdE48C0Cb",
    "userId": "216427183"
  }
}