{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13ebf44ef15266b45133dbe256dee6faaa3b1addff89f2422379831a5c486e4e",
    "signature": "0x00d8b140575ef779a8386a112fd8aacf51d38d72b4c5dee0e34f9b6267620f01395b8126e2abae45a17f39f1e9c464b95a7544fc0fcbad04d578b2d488447f6f1b",
    "signer": "0x28bEf49106d8490837cD31B6eaa15f34031E7678",
    "userId": "63735059"
  }
}