{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309080",
    "entityType": "User",
    "nonce": "0x4713bd9308cc589a7c8ac5f8545cb9713b3a7d44012b4f996b7b04f03f3bd391",
    "signature": "0x44d2be07b6ea9058a813f1870622441f7cc11db9e197b71db15bd427444c3d6769e43b42ad3b606341621fe787064af5e04fb10a44b52b7a2dda2ea6da1777821b",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}