{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152485",
    "entityType": "User",
    "nonce": "0x39fa74756fbd55cf7f428f6d10dd013f698169142eff5a20a9f2c1d251954361",
    "signature": "0x05bf53a2b0197cf8c79f5a448a66a5d0b3dd41273d9488a414c43696e56684b541b4186c3253dcc77756846536ae23a796e33152807483725e2ddc508f25ba091b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}