{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd036a664b78675defcf3d72ab484db9a8ba5bfb5f292734e2bd3bd27f78a9a01",
    "signature": "0x7c6bb74c5fb9bd263dc7af00b6c3e4c6ca5f0ed32d3ddcc9b61ce5987e4206cb2cc8261ea448d720e64ef5618a00636dd2a066e1b8d74295e251edaa7b7bd4241c",
    "signer": "0x3A2f3C8FaB49e69684f6E8eeFF6fE54a4EB7a3f9",
    "userId": "63072732"
  }
}