{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28ef1951fc6263ebaa4cd4d525186eadd7e630a0a84652f888a7e8b89be1c052",
    "signature": "0xb91f13cc7591982defc9901806c8c1440b22881ba04f385ee68fb7ffefeb94c36c3abedcdb38fb391188ac2fdc1984e9ac8e18e2b85d05a714690122527b04261b",
    "signer": "0x10eFA6B04fF878294AF9bbe86EAdE4E869eA5829",
    "userId": "349241104"
  }
}