{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5a6041d94f724a63ecfab05fd4a28d97508c8a63bc8ba3d63d5f38805bac443a",
    "signature": "0xf82ed60a059f2ca3564e81a3b6d6f95e4631e6c6974c757044fb4cc4a652e3346057688fa98f3b2d6c15559fc5f5eaf521cb0d8378fc8576c0e7655e2e1247bd1c",
    "signer": "0x4D07BB19448A58b57Eb9c52daFD861C07b7b26Be",
    "userId": "216060908"
  }
}