{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1311980c40ef904e424a72d834689107d8cb374a70b05d29fab86663d2d88fa0",
    "signature": "0x4daec9f04bd826cb39418a90a1c26f76ed3051f25f756a61b2433530d234bcb54c3fee7f590c9412254522bea8b6413dd74918dd06b357f58a10b518b47252df1c",
    "signer": "0xEB943148F7939B794BEae8C82cB90334555f23E3",
    "userId": "602774055"
  }
}