{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "528688046",
    "entityType": "User",
    "nonce": "0xbc2be182b37d99655d7b77057cf35cec886dbd0264b8dfd3bb990fe8ee722bee",
    "signature": "0x57669a09376d48a65fff2608350b4201591cc7185bc77568da837b135c5dac731ec4848a33ff354265f1cbafe2cf224e21b644f01484eeed70499070a09eac611b",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}