{
  "manageEntity": {
    "action": "Save",
    "entityId": "1076457562",
    "entityType": "Track",
    "nonce": "0xa9080b3bad53affab5c242f11a8c1b7f9a38106cdb9100975c71a93e59fa44bf",
    "signature": "0x890f99f0b3b5e19ba2e126e03e165f81c0aece9b6aea573b38d3bd9f582448a36bf90bebf51ddd5c00b9d33a0b366e001bf4ee4cef6cd566f4242779355425801b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}