{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "462352719",
    "entityType": "User",
    "nonce": "0xf93c47baf94f9200e5dc9a13ab2215ca37c0e22e77e9f818ff8bb1c6e66026b3",
    "signature": "0xf90275401f238e368de418accc9d82aa6dee010f97bc5293f37983c28abb9894285c7f1d4c47f4a375c892cd36e238abb1fb14a71575fe24b4c4d4ce8b2f21cd1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}