{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x1bf3775b6c0db0ee74facc6ed1b324d375bf1d5489432afc7cde00fc2f706311",
    "signature": "0x1563611d3b9b8e1ba0ba3324bf3db591cbb0cd78ee02b74f9586d2067bee27554bb5165036cc25c20a14b1d0ba8e51aa80ad1b9d1ed364489bf5a3f296be017b1b",
    "signer": "0x1FffC5f7E139c7821964B8db45C6ebCd054eD41C",
    "userId": "158052"
  }
}