{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xe7d7324cb30815197f4865826cdee56ab14ac62ffbd7fda189a02ee5d1240bcd",
    "signature": "0x8baba829afd1310f4c0bdc550d2fe9166801842778dd0ede5a9c721c6a340d785db6015e3df9ac28bdd820f835c962481cce304c5341d700c46ac5d7620bdb021c",
    "signer": "0xb63A62F1972580dcd51d6A7Ca3a7d5BFE1f4bCEd",
    "userId": "863925144"
  }
}