{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9263b6c0197ec3abad893318cca7f240a9ee669f787d76380ac47eba218240ca",
    "signature": "0x926df7f345ab2328858dec6b8b07efebec24e11edcd68a1a513eab038761775b44b7f99b24501dd89cd1d017f82db50ae0251321875001e3e1da734d754edc131c",
    "signer": "0xC4cfd63d4F836f239Dc45E79b9F9010E5F2FBa7B",
    "userId": "913489735"
  }
}