{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "547",
    "entityType": "User",
    "nonce": "0x3a0f1d6703f7e370ac42036c4c0aa51d6263fb4ebcfbfb04372cafd76dbc9c77",
    "signature": "0x1adef9d61154ec036fa4ba31b28668486643eeb544da0e52d2181eb6da7b067a36cd17c37843105e5719557b48c0074bc0292c04ca4ec58c7a50670c893c34ec1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}