{
  "manageEntity": {
    "action": "Save",
    "entityId": "1362330930",
    "entityType": "Track",
    "nonce": "0x0c1aefdaa01c49626d1e1de7bff3a0b90cd50efb5c1e447f0e401bd5b0815f51",
    "signature": "0x2309b1c3d1f16584650063fd715d60e37e46c4064f3e6bab50ec0cb4332beeaa702dde1b2b94202c22c28f5c7b2e8b9bd836375a00ab20e495c8b39a807ded2e1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}