{
"manageEntity": {
"action": "Save",
"entityId": "1127166",
"entityType": "Track",
"nonce": "0x3858b5ec3293f43f038baaee359a72a906a938a6998d5bca1b53e55c3dad2884",
"signature": "0x9c2844ab3287576c177f6a9d97dae3db55bc1a6191aac74dcca3e405a130733575860ab2988e6d878c587017141ef5a1cd3de520ef6b3baaadc40791aeed2f061c",
"signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
"userId": "100976759"
}
}