{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53703",
    "entityType": "User",
    "nonce": "0x6eb19f83297b55d9dc30cd234fc2e98b14bf4790e0b4f457f052ad101e749930",
    "signature": "0x1b19edb80b207a206a82b9a82e06817d1dfe0a5b03d75efe6f3778fb7c3e9da4604b8c0b8daaf912cbb61de3ec81a6f7c028203b4def1df3de4980d807d890821b",
    "signer": "0x9E7FDEEcc2f0Db11e56CD39d424690bc6CD308B6",
    "userId": "223270106"
  }
}