{
"manageEntity": {
"action": "Save",
"entityId": "1393331417",
"entityType": "Track",
"nonce": "0xcbe3fd73ce58fd5745bcf0901e15a802226b4b4c9b462755e30571133bd89639",
"signature": "0x808762a71ac12ae2e17d2b6aa2091f484ceec2e6a7fb68ded851613c94f0a968758a33440352eac22f27aeed409a5eb21a6b82d758c50cdd4ba5d9a83ac18f681b",
"signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
"userId": "100976759"
}
}