{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2eae56e965740e351c48ea5a49020df15cdcf32be87313acf50ec597de69491f",
    "signature": "0xd53568d101ba30bcb9903b7ea5ce3b80c3d9a3adc91d54af49998def188ef1bf4d60be1635f8ac46715a0216344e48c01362a7a9e14890d650d23730032b53a91c",
    "signer": "0x75086270d55282Ad1107e72C38225d5Cee3c987F",
    "userId": "590666223"
  }
}