{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x2ac28e8c1a4b55a7c202acab10703906603409729f4529f34fe1486dd2d92c3a",
    "signature": "0xce63e3bdc3c65b86884d27226b467b391a6973736839b0d014bc2f3865a7df4f78d1886706381a439faa60ffac9d64cd6411cd0a2d99fcab0835d6abbe19942c1c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}