{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf4d3459306ab4127f5c34122c93672aae01bcd84a127076e037eb53d4e548c5f",
    "signature": "0xd989ed111122056402ea1a78956dd265f666a1069b32b2724eaeeb1694326db80bd1789fbfb88bbd57fe88ecaae47d101bf1c24c4d48b6aac2e9555c162a33b11c",
    "signer": "0x495592750EAC33eCa22472369F1d7076ccEaa2EE",
    "userId": "351308189"
  }
}