{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x80e02cac005e2a2de06b74d4e5a9a606b905ed8947c46b6d209cebc11e24f921",
    "signature": "0xf0b91bbb3bb102600815f497e8438971590151f9fd942f23a2de96fd1f33006d53f37a7607c445b24fe431e9392fd442afe7364bdb408f9f3a1c247f9fa04cd01b",
    "signer": "0x6Ee7842A432b779E1Bf51F27B824fe86161cee6c",
    "userId": "408407824"
  }
}