{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1c74f98263b6d665c015b4eee0dd4d0d626bd718355f13e44ff4dd94f54eeadb",
    "signature": "0xcc9192d699e35e787e8554393454f961d32bb1f21909310da77fa9fe5a5a26d10b248adf2151e5220b59046d7a2682d5362aa33c2f73986d5626449883ff87741b",
    "signer": "0xaCd3122E4721AD0f883028Cf1A939087aE84D9D8",
    "userId": "527636914"
  }
}