{
  "manageEntity": {
    "action": "Save",
    "entityId": "88018",
    "entityType": "Track",
    "nonce": "0xe2862c177a1982c6d83b9c5b7b6bc1f8e5dfb48e05ac92c78ef55f0187778f90",
    "signature": "0xd4aa168828f0b050af0e1e7580903e4e38d0a333cbb7d66478b65f244975723374d8769d0b55805e01c336be1623f44bf768e10cb4ab40412b85d123fd78c4401b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}