{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b2457e6426ba76c6a7503a7c505939fcaf57df8b4cd7c2af0a3ac53051a4c4e",
    "signature": "0x3c62aa111121b786d8dda064e8c0878fb48c61a40bf3437b9367c983c4bf38fa4bd8e65c5ccea8d8e6dd3cc66c58dbd26292c2609613614c1531dadfe64a91d01c",
    "signer": "0x250BA5492e75e8e9a4D09C6cDE8D09f1B7dfA3d8",
    "userId": "831474008"
  }
}