{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12723",
    "entityType": "User",
    "nonce": "0x6f49a96d9d16182f4a584bb0ba087960a34a6eb08b5c252a82760ba05e439803",
    "signature": "0xb31244785464cd55ae6a4a87a64d54d9b7dd60a1594007334852ff1366213c586ccc3467f345ac66a91b907beb283ddd17986fc0453f1536320244fb574480a11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}