{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "378710",
    "entityType": "User",
    "nonce": "0x7afeca9b68536f70424d50dd6a56e79e2ccdc894567e368286c3cd29541d7e79",
    "signature": "0x131e493156668afc52850bdfb5f4b29d516ab9b8e73432b1861f043c2ce4c89121e294021349ae13f0cc5afd3e72486482275bd498ac16ab67759d2251f92a561b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}