{
"manageEntity": {
"action": "Save",
"entityId": "1212067228",
"entityType": "Track",
"nonce": "0xc1a201c44bd72e2882b61db0f50d6ea7cdccef66cbceb7ece7f98b1c80366107",
"signature": "0x0baf826483e7fcb1ca2f7a469c06f4428d1a0ee34f58409fa813580e1acbfcf537a3c233fe7a9cdf999f0e43c429ec4e672e112384d6021008aca44688e816d51b",
"signer": "0x39BbEb25924EFA2144235AA6b9287C30dA0bEF8D",
"userId": "320790987"
}
}