{
  "manageEntity": {
    "action": "Save",
    "entityId": "1096105",
    "entityType": "Track",
    "nonce": "0x631c1cbff2bdc9bf7bf61f484e371c8290a324110ce4df8cc23962b809c8c538",
    "signature": "0xaae3dfdd986fb9dbf4aa4985ce08d539fc5717496058c4cce62398fd470e599a2b7274b0fc680d2c8b9e036fabcf32860faef15741d132a85101fe4d0c5ee27d1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}