{
  "manageEntity": {
    "action": "Save",
    "entityId": "17016364",
    "entityType": "Track",
    "nonce": "0xa7f97af576c169ee16e64be99ce81655ce2e0a64cf0a8ce6fc74fa2a1ccf947f",
    "signature": "0x00ff32f82dc6b76edcf19c4d5ce8095fb2d8d150d4160e3def58573f4670ac4c3f8027274ba676b9c62f868e1daeadeb5b027c6cd719aa4348dd86058bdd0f0f1b",
    "signer": "0xd1bC12b8b46f2FAa152aB791052b4a26826F86F5",
    "userId": "481080235"
  }
}