{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086973882",
    "entityType": "Track",
    "nonce": "0xd8621b45cde8234630488901b6afdc6dbf711bb18b04e627ceb593f72f40c903",
    "signature": "0xe2fadb2b31b09c4c956b8b79a6a3188812993672baf9bfcf3f57bcf97448cc7b334a1b9339377dd1bc7809b45d99113c0bcfb56e6372d0c70ac58963b0559bd11b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}