{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140223",
    "entityType": "User",
    "nonce": "0x5a12d81961180993a6c6f4b175ed776aef717e4f9d6dcc2e9058972660f4b12f",
    "signature": "0x34bf41e75f02d007bd9777d65abcc628cbfa21f2b1e053723e88ab6341ca9c964c9d0379cf5e7675c0679c1240b385fa8d45dbc36faea04f7b00a19c54659e7d1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}