{
  "manageEntity": {
    "action": "Save",
    "entityId": "1146005032",
    "entityType": "Track",
    "nonce": "0x9e63834611f5031eb94713059367f688c947b2e051f6530c66aa1c14262bdd2e",
    "signature": "0x3cc8c3e8e9959adefecbf5670a728eae0f8fe7913ee88061bfe472c7dc280f92039815948227c80dba318d3dd8151437a08ad935ef6d02cd9ccb09835870b39a1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}