{
  "manageEntity": {
    "action": "Save",
    "entityId": "1062685",
    "entityType": "Track",
    "nonce": "0xfff03395a6fdc42b852e55e0b02162f97e3f0feb2a8b0a78367ac4e871cd51e8",
    "signature": "0x395fecd32ad65b5267a32dcd150fe80856eaad38b4392e603ba686cd8dc28e8038864aaa8c49ff30271926fa3767834f00e2da1d5387484b3e9770f68e19f9a01b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}