{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618242981",
    "entityType": "User",
    "nonce": "0xf367f607177294605fba55b8a59eea8da7465de24efa4cdcc14394384efba128",
    "signature": "0xea604a49303e43536aab4f2d151f5f4bcac9252a7ad3a15d1e908764cb6446e4227abe36d011bbf54707b973ec48172345d214fcf53a33b8e48bc517608a09401c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}