{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xddf7a01a084efd30a5caf92f603fe0fe9bacd787254d34c1d6973b2a018f9b98",
    "signature": "0x26b724cc5ec49cac9e96c9bb25bfc96a3f9937587c7adfafc23f410a2cfc77db2e151ab98229e61e3718db4861629a7ab3076f99abcd3b73224cf7764eadd1021b",
    "signer": "0x1b99E4DB5DbF8b0C7181F72D83EfC05B24E04143",
    "userId": "313595576"
  }
}