{
  "manageEntity": {
    "action": "Save",
    "entityId": "528767",
    "entityType": "Track",
    "nonce": "0xb26b80e4709e601fd944b5d40b25ce9ed2cabb85841b3fe63458dfa5ac71b13b",
    "signature": "0x2117a260df0fcdc9550f809381d590abb3b88bf03d3bc259a56c747237ee23d779cff95a291ae290f1863b185a3f83a0549ec607ce90c8f342ce8e42ce3022cb1b",
    "signer": "0x2f34B9A3E01C0c542F072a27F65a0708cB1aDAbf",
    "userId": "711463695"
  }
}