{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "56452",
    "entityType": "User",
    "nonce": "0x5d0ea4ec530d5771f8bcf4d77febf4fecd57f6d0ef775f09c22adec62d44c568",
    "signature": "0x8c2c2a32ed56f107822d35ff1598ea7966c6504a7abe5f2736e01b065187bce90962b71efa5fb66a3c2a9ea34b08e6499c85e94ee7a90551a68aef735753c0e41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}