{
  "manageEntity": {
    "action": "Save",
    "entityId": "586078742",
    "entityType": "Track",
    "nonce": "0xa98cd99fe999eb68b1f5bfc9241884815bf55e34eb6f8ef414769f515113912e",
    "signature": "0xfa399281d0742bad6fcab258d6037e02c84c0d89d6d763424e071d91d71d37307795477f09e252d56aabe29495b3ae2e685950ff6bfb2840a429bcf58574e45f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}