{
"manageEntity": {
"action": "Unrepost",
"entityId": "1519819863",
"entityType": "Track",
"nonce": "0x367b52945c5adc03275c0657da304b95419dc279f6da092c793c7fac966dc2b1",
"signature": "0xe40947263ff8baf27d800faaf604bf7cfb3668e7ee354d5dd57c7c501ee7f6a034aa318ecde41b9041f60e27ca5442f220ad0b7ab239b580758048c9b341fb141b",
"signer": "0x9C4E28DDf329832A3AdA70b9093624d26F32bbA6",
"userId": "101959739"
}
}