{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb743dafebabb8efd9648ab53f1ee5a0493af7de10dfeaa1a1afa26f231c14c2f",
    "signature": "0xc088cb84237eacf2b5b4d7eba93b6e790dbdccda3d70e152ebe94348d98bb285361df555670cf4861b097be78b5d2dc825ac03e0e2bfb7cd573c6e503cfe3b991b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}