{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "341",
    "entityType": "User",
    "nonce": "0xfd1235048603035d62df15d200b5d02562873d3bf1ab651995a334e1b6370b4d",
    "signature": "0x0de1ff855eb8a9bd17f2cb7249da54d856fe81a0e177c3d7d653ce4aa9a498aa5d4a091e9beb3bd57317fbcc2eb1ebae80952d3f9261e56b79567e30a60c2ff91b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}