{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820486414",
    "entityType": "User",
    "nonce": "0x2c83f9b0c21b6a70b9bbfb391c1b90d501a1f97d7121c1d82de9980a03908263",
    "signature": "0xf4056b7d873d24cec0c0dd32ae25d4dd19dcb4c0eeedb3d0ba5234a0e1fe46bf537cf0a5ecc88d3ccb5e4fa6f9cda16a58f95b59a2be702927052c114a8b43611b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}