{
  "manageEntity": {
    "action": "Save",
    "entityId": "368255",
    "entityType": "Track",
    "nonce": "0x9e65d9f0012d7da529d1f9b99761b2fada8e32cfb46d263aad074b6ff36691ba",
    "signature": "0xd246c3f439810ad7b5716b15fa058a14530a8dfc8b3bcad3e424ded13e6444397c1408f77f4d97ac2b08b7b547baa8aa8e2fa6b9c7b2e50d25012f75c7d719c81b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}