{
"manageEntity": {
"action": "Save",
"entityId": "250019551",
"entityType": "Track",
"nonce": "0x2ce93068be6b5f31f9cc2839736b946ba76d2e18a911563a52ec02fd901262c2",
"signature": "0x162119a5a618b5b69094c8f0e252c3fc078f95d57f5c13c43f9726ca040d13643b2f025df24867e084fd674f7c215b7d2e43e14a3457a9674f36af1c408449481b",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}