{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51359",
    "entityType": "User",
    "nonce": "0x655f8f6773185e395ce8a0c9a1c50d59fee5aa4232813efabf733c44c25cd287",
    "signature": "0xf5f138bf13381f3e3f845b96ba79e05e996a50bb0af2c7ddbb0d76a44f61d9243b85b33a6cc3c4ea892020965e8f1f7605fc7b9966fd6637bf94c4a1cb84d59b1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}