{
  "manageEntity": {
    "action": "Save",
    "entityId": "282765236",
    "entityType": "Track",
    "nonce": "0xef6d52a945cf62a5b594bfc9dfbf84d7036e3b3ac7be00cca01ed809440d1425",
    "signature": "0xed2ec875ffc6bf1272cf54a85a456a31dd49b2bccc4fcfbf7c8d53bd04e2ea5b13753c141f127e08269d31fd60837b0fa398bfbabb30aee0fe0547eedb5f94121b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}