{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666815500",
    "entityType": "User",
    "nonce": "0xc759c66db397c7dffe7578f304d8f3e12750e4c4caa827e1e7928b2fb115630a",
    "signature": "0xd43fd990e4670f9494a6b115647282e69ff0cab0aa0cc486b3fcc14b41470a8c4dd13c5877321e9dcf622cdea1871c7d4d5a89fbee9803b83dd4f1b8bfbd712f1c",
    "signer": "0x97Ce19D122F5b51231cF4DBbd25Ac36CBDd6CACa",
    "userId": "426864186"
  }
}