{
  "manageEntity": {
    "action": "Save",
    "entityId": "617014",
    "entityType": "Track",
    "nonce": "0x5a1f47e2d517381aa0c7470d7ab722947023c462077759f93e71e918e32836cf",
    "signature": "0x81d0bf65259904b2e2dc949a9022075e82f08eaa4ba54c6afeb1a9dfa4bff6ea7320796c38713491021b81bfdee15b9775dd9da5f11a0f870380e4af28ced8961b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}