{
"manageEntity": {
"action": "Save",
"entityId": "702072666",
"entityType": "Track",
"nonce": "0x3af145edf3828fbe797b2e3fec71e77f2790a9fc1748df3f7837e5941507af10",
"signature": "0x6038ba073c3a78e4365ad357a0dddd64b2ea44d0c9bbd7398a8918d3ada1065255e5c84ae659f1d33c47ca59d0c3e44892ce2f511b4194c17affb836c1312a921b",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}