{
  "manageEntity": {
    "action": "Save",
    "entityId": "359498064",
    "entityType": "Track",
    "nonce": "0x64530041fdcef33ceeb9a6082ffcf785b8ed3c0f62277b40f21c3971c1ba7c68",
    "signature": "0xfa43d960437734edf43f7ed917fe1121fd5aa702df782009330f0f162da2917a0982c42ac1a25a9110d8bfa0959ab80cb7fbec439a4643f9d53e371464a754901c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}