{
  "manageEntity": {
    "action": "Save",
    "entityId": "2047848181",
    "entityType": "Track",
    "nonce": "0x017fdbac0935bf2ae55d398a0159ba824cba92730ae5fcef0b6c4a5c649e4f74",
    "signature": "0xf206082232cc12ec364e6c5487a3b07597e9db7439ab9a9249099924258adbb24784f4c21c739f9d06a63afbfa223d88f534031b251c87d65d88e60d15fd93d31b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}