{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x529e9ad31a7962dba5d09c7c0bf021dd1d877d1c855bd1e0408e995d64df7616",
    "signature": "0xc987e010015bf648db264b1077f44dc837ce248969679d2fee0d43fe6e4257463562999382d5ff09c210112702aa9069a80e60352393b7da319e01e3030bc8a61c",
    "signer": "0xDef839C6F931C85C8a28A7b27bDb817A59761217",
    "userId": "521882155"
  }
}