{
  "manageEntity": {
    "action": "Save",
    "entityId": "284117429",
    "entityType": "Track",
    "nonce": "0x17eabb5d52f2c7517034a70c5bc1f6bab5cd721601b53ff0b04e9878bb69bc8f",
    "signature": "0x58bbe30e59d8aadf6f9a9c28c5f6c2b88b9a61c0cb71a5e296b01f77d9eb7bd029721ee97f6b7fe30855baea63d93e0e1efe15ea3470bdaa56f4376bf20a668f1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}