{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xddb768a102818d066cdce05e3775e622157f65219bbba9ce06d24ff4e536c932",
    "signature": "0xc0c5b50d01d3d48876a8784a41fcded027b63b03fc84444d4cfd4d79030fde584efba446d0350c0a5fa1d9cacfded0c9b08e628faa67ee625876ef0e545b27ac1b",
    "signer": "0xD1CeFa4d0B7906E74f1aeEBF0C3FCE449ddd2311",
    "userId": "95489441"
  }
}