{
  "manageEntity": {
    "action": "Save",
    "entityId": "1369169234",
    "entityType": "Track",
    "nonce": "0x5d1daf4068bfec9d2161c934a43991f1669a28e93fd7419abc6a35e89c19e7e6",
    "signature": "0x28443b80904cb832bfca6ad7c2b2fb4ec28f275e08893a8e3ffd96a12b131b674557dd550baa04efb0510b1c3df85b631cb6d3c48f7678d98dde25bd41c115dd1b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}