{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4220",
    "entityType": "User",
    "nonce": "0xefa2e8b2e7cdfd1e2096bb172e1fff62cd93c7f540da5154e30594984733be90",
    "signature": "0x026b2a71b786822ee85b93bd5255c4e186a43d10a2c70aaa77c765709a7700d66fa2f37b94713ffc7fec4f5278f1aceb8ef0f21f765264408308b71bc1b8bb2d1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}