{
  "manageEntity": {
    "action": "Save",
    "entityId": "1267124063",
    "entityType": "Track",
    "nonce": "0xef623a9ef277cb06102acba2a767375372f05af5cb12ff11195b01f1ec684dc9",
    "signature": "0x0827cd8cb1d0edebb6fbb1107b2850be74f5d688dbb8b90f9eb728590f20e4894c04d4f201afee5906ef25dd008b343d9c1ffc8629e15f39201aa80e6587a7f11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}