{
  "manageEntity": {
    "action": "Update",
    "entityId": "253189162",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x68597fec3e7ee914666547e569438ddb05e10988c586072fc5276d6412e446a3",
    "signature": "0xc2b0f898152cd259ef4ede00750a6916d040a520df71b8c3b62a7385f03b6b0b3820084f5463f10ced9398038e4ffb81f5e65d8b7bdfc8fbd7bea9b4926a014c1b",
    "signer": "0xbb209dFA02d7f5409259002d4bc200AbfE1a3C12",
    "userId": "253189162"
  }
}