{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "128172",
    "entityType": "User",
    "nonce": "0x13f87e3c265d07fd651e3e32c89953bc4646687cd2715330228009e39949736e",
    "signature": "0x54ba43cc6cb5ce935ad35851770d32104af4ec480f3f10bfe80d10e840d923cd6b98527e3f95a4f579ca37e7f1d9fa9fd46a3f30c3ee6861d4560103f2eb6af11b",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}