{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100910",
    "entityType": "User",
    "nonce": "0xa8c7ade519c75b8a283874683352ca5d5fb5c7bef73952d9e8245d57220937d2",
    "signature": "0xd12c9263f69817dada9c1cfb944f2d46bccd81bc15f60e244778065dc1a357356e8b0f839d86f8e9df1b823332c31f15954de7c1fcce221ab7d78d948441f7f31b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}