{
"manageEntity": {
"action": "Save",
"entityId": "1324784821",
"entityType": "Track",
"nonce": "0x13c59875a0ed4ab50eb646a473f9af03d0b9c0a2cdf2d6133adfa9cdaf70b1dd",
"signature": "0x9f610aa0438ee8f701f31bd9b88d2e0f8b5b53a5edacbe1368e088867dec4bc5031b3161951684f565464c86f5911f3b2091af24d97909900947ba2e22a97a0d1b",
"signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
"userId": "620307004"
}
}