{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "607647194",
    "entityType": "User",
    "nonce": "0x2d3070a5f6638dc0b37707fe56a535eed06f5842a02acfb592a5c2d6a35df7c1",
    "signature": "0x7a6ec55cacf6c0e82e0b9bbb73faedb63624b9cab938d0696c1083e6dfd469f21039556e6de47ca35a8098a578980652357488471e6641d8bf75ed1a9f1664d91b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}