{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51335",
    "entityType": "User",
    "nonce": "0x5dd7bd4cf1b4b2526285816e71920ed96f5994ef98887d20ccfee1a170ec7c97",
    "signature": "0xa0e78a465bcc6f1a40dba1f0c5bdf2ee7f1928f7371b5a20f13b93712bb45a4a3f72299cd28f6f9585a1fad344f82b3d71227072c7db0184a86874e24d373d2d1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}