{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906542957",
    "entityType": "User",
    "nonce": "0x1681e6a61ba16961c9137c736ee1575c157fac43811bc7e8a9bd653b736be4d1",
    "signature": "0xcf56ce9db3cab7bab49d67e5145623bc6c57fbe19cb4ff6443f8f2fb14f3a12c5de63a1e2703cf78f4cd842e1dbfafa8148c5bec22986a14d5963e427a98fdbe1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}