{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146510",
    "entityType": "User",
    "nonce": "0xb24a944b2e55bb4cd7bc05c348138f3ed6538206a1b4df27a7e11527daa10956",
    "signature": "0x502886bfdd4f1db0291a2edee6038448afd2d7da7c91f541e0c2ebd3c09d33587692026a72667d1dfa0164a21a67a40f72bfd883a9c06d8a833de4550ff16b941c",
    "signer": "0x44567269b2165376Bd13d6bECFDE4A02F3ef59AD",
    "userId": "49012201"
  }
}