{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "501531",
    "entityType": "User",
    "nonce": "0x1c6eb28ea8f9a10447ab62e2f125fa3fecb327524ed9014e9c41aa055dccbb03",
    "signature": "0xc33267ea8090dfd2c405a4496d9bb8c0b5720c0dbf510eeb8f7060dc041ada7246ca07ab0affb5ea696fe130a7d560613b20f7ceb19223f5b88c11db94fe76401c",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}