{
  "manageEntity": {
    "action": "Save",
    "entityId": "1076636266",
    "entityType": "Track",
    "nonce": "0x739d3256e292dd67fc4bdd11fc20ac84b24af502a67295d412428a2d67df82a5",
    "signature": "0x0810cdfede458375a022d799f361f5d9cf8dfd12996ac148cb95e482b9aa71cd53042a5e2fb04536f1913bbe8916e69d96a484aa6679d86de35585706bffbc391b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}