{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6caa576ab08920252b9197b9aebdc4ec14104eedad76588d0dc6a9f31e31e110",
    "signature": "0xcf11c17c8ebc7e7233f17077f9ec0a25757c0b495d1ecc771affcba867ac0c1e366bc9e7499f545cedeb6f34e7c62c9c856a2552307d52d6dfa66963836db40c1b",
    "signer": "0xE4a94E256D4Eb2B68BB78c9ece0bcF96A39Da76d",
    "userId": "319311689"
  }
}