{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x0f2fcd76dceaaef00709486a36e0295ba1093c0e5322d7029f10ba2189deeb52",
    "signature": "0x64dd5d97ef25a31488b314d397ecbc1e8e8787c39a0a176b27917a1f2dfbd5702dcbcbea6cd71fae085c6c2dd81b2ce9ae9dca0fdc36e6ca079ab5e36f013e801b",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}