{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8821",
    "entityType": "User",
    "nonce": "0xe4c3bcba3e0f1f9c5b681dabec4dac37e67a58424466b694c8d2a97e34d89c0c",
    "signature": "0x0dedbd9ce243e5c46ed3d1e9c8ea7db92b34f7f8f8e91c714eb81077630f09105aa54a23c8ab9b45a9d0903518f96f0b448233ebecc33b2b8461c4358d2eb87e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}