{
  "manageEntity": {
    "action": "Save",
    "entityId": "1332725329",
    "entityType": "Track",
    "nonce": "0xdf61e3606fd4c87e6dd24c4f2ba53a60e0a1160931f1dd55750ad64a1bf06008",
    "signature": "0x24c4098ef75db93fc85d77d0fc246f9b5911412b3941db41409087aa28aafa0e53986bc8b41b4a8570f91d953c7896539980db88e46a248016d5bccdfe96efd71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}