{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x554ac5e136da7a4bf6b0eeb0349b6cee2f8bf0e752a551509f586e5672138864",
    "signature": "0x544d8e4f6f1a770b62924f3ae17ab7c651212357e278e6b85fee705dda220ce56d0ce9dee2efcb01d8ca2cd302a57adfed1d3cc3677707cdeb947d41730b29d01c",
    "signer": "0xA9AA853e2FF22EBEfC92cE1fe6E12b88851a69c7",
    "userId": "783122944"
  }
}