{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x58ec6c85d3b50e07fb50870486e74ed72e37bcb68eab3a72f238676d635d9cc9",
    "signature": "0x2e7d72e82f7d106648083f861e8d14c2a2c65ac0ead0b44531f67f40525de4c7608204d1b84d1bee90f2be4cea738916aa552760eca2d4aec1c8c15f7debc4fc1c",
    "signer": "0x35c139bC26b7c5CFB9185f419fba3245c0353cFa",
    "userId": "158234527"
  }
}