{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xee76c9ca82a7909c89c6e252de90a2586b6005c0cfb0e076e7e18a5a2204135b",
    "signature": "0xf646f7ccd0a41b9b1676f72b70780501b262f2a3136f8556da20548a87dd1bdd55b9b5c5a9ccdf2814a2c6b6e946b2cb78c332ce90674e00416c87cc38b6058f1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}