{
"manageEntity": {
"action": "Save",
"entityId": "745093162",
"entityType": "Track",
"nonce": "0x0b3d66cdc28db623401745f3e16c59b35a495fe9e6e66013124fc601edfba665",
"signature": "0xa90d151b53012e7aa5c468d70aa709166ae239e7847fcb8770134fdbf57311513bebe3ce371263e3eba6565d7048a5a196452869ae3dd4db95ac7980bc79a4221c",
"signer": "0x3D4d8a781454E2338c482dE697d6DE1ACc7D9031",
"userId": "599751364"
}
}