{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "41804",
    "entityType": "User",
    "nonce": "0x2989bbe918a9816c6f4dccecbed8bdf8efc968b9a38e1eb037c474dae32c06d1",
    "signature": "0x739e405c8e176cff204f5be8b69460a71a8cae22107f442474bebdfcf5d246291c880aac217310e77103cb9b8faef3602f295727457e8a47b67786b851d435a51c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}