{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8251",
    "entityType": "User",
    "nonce": "0x37df8cf4b7b9c613bdc880132c8b6269fa0c838011b361efad54518b16d2f41e",
    "signature": "0x6d110379dffcedfc32405da169477ea6da9bcce5ee97c4ab069a34177df647bd382d48c1c91871d8cc0b96d2ef31bb26f1b7b9eb1e7d2299579148537abd325e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}