{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77481",
    "entityType": "User",
    "nonce": "0xd69a4306e0bfc641fa90e610d0a83827e9571c3f0892063bbd47662f19091d3f",
    "signature": "0x3ffc47e98f1cf5341feef14a74b98654b201b18c7878b0c5e84786a4ae8c3e0f62e848c7de1b5631b6c5aa968401fe4b5abbc835c58f846f2966d0d9ac4811fc1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}