{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3e29b0c9c56359ab6b880da2d373a293d38f1a2e1c02fd9459b4ed28aac77295",
    "signature": "0xfedcabab85ca8cdb28e6de2fa96776bccee1ed9a0efe5ef867b24bad3019dd6c38b19471f3dfa76904d9eb3518c510b98ecabd69be489937465d7e4d11492d6d1c",
    "signer": "0x48c4Dd5236C687c2d3AE6E56BD32006e158dC6af",
    "userId": "937981272"
  }
}