{
"manageEntity": {
"action": "Save",
"entityId": "1855838043",
"entityType": "Track",
"nonce": "0xc225ade2eba34cbe26b325396e7d3001d6acabec8beb7b1b8128b59b41dc3df0",
"signature": "0x3ba081b9b5614b27eb6ad82f371eb3e06a6097cf5661494477691fecca13400a1859c42e1e587aec39bcbe3c571de5ca469c0f83f9d95eb7a92169534455ae251b",
"signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
"userId": "803288761"
}
}