{
"manageEntity": {
"action": "Save",
"entityId": "1933604765",
"entityType": "Track",
"nonce": "0x9ea238e389998d870f2ffb2ed86a319a849b716109f117367a857da1a506ceca",
"signature": "0x637ad2be216ae869ecf9b2086eb0d327eb8e4accc9245ac9fa6d658038a789193a515097df85753a22f3a033f1a6fbf6e02fcd888eab0ccdbd63c657632e75051c",
"signer": "0xc0621be31c1D1B62b94F2d48eE34dD3c3dA9D57d",
"userId": "161438318"
}
}