{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0678dea213db0c930e2fe3f8c28e2b0aae7b54d5526b0c364d218dcc9c06eb49",
    "signature": "0x6bf5b4a1fbed95c18bded822d667b0e346904589fe80bbc1d2896d9117053ba8792be4935c955a1a47bb7dfc20a16a1da47b04307ef86eb54172fd0dc2f562d51b",
    "signer": "0xD05c50E9379973376d0cA28B2404f66DF52d3570",
    "userId": "534408612"
  }
}