{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5532aa0a4d78b6a7f4537f6fd6a9e77ce2db565b2c194a68eb5676e325a8267e",
    "signature": "0xb55cf5995b57e2da0d6763f117a9b4cb28f4b618e7291b5a407e038b2e40857a1bd319f1cd36eaebd107f0bf6d00bcd205d2a09bed3308962f92a3f728cbdb321c",
    "signer": "0xdf555AE1cDda83689Ca8307CbD9048AF27b89b69",
    "userId": "208431511"
  }
}