{
  "manageEntity": {
    "action": "Save",
    "entityId": "2085979405",
    "entityType": "Track",
    "nonce": "0xb793f4aea113e68233edd1967a9713f6aa1934af686ff35fc9c74dd6d33ed025",
    "signature": "0x01d8604e9058a0c880565734caf851d8f94e346c1189acc0ef23bd11af9e6bfe6f1f21f617817175646e3b0dc4304be5cd170757231b63ee485769ebe285c3861b",
    "signer": "0x7e728b2B265C553aF3265EBe8571B4a28E6B02d4",
    "userId": "180658142"
  }
}