{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059089",
    "entityType": "Track",
    "nonce": "0x1301a17687953edd5b384de1628aa0ed4b43722d5386a28bab9b3da7f5e16535",
    "signature": "0x029d714ec34f9d7a4536f27ac25485bf00f03b5f8e3351494bdb35ede6931e377067de130b457e2e653aeacad02c43aa3295cd0ed7f45dcbd211bab3b8a06afc1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}