{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23c0562402819f16b38c0152690720a4ef34de6fc79c4a18874a6a37bd833027",
    "signature": "0xaa27d1d8f1181d499b3fbfc0289d9eda9775da0496c4e13befdf19b6d0b1ad8b1f33afdec4cd973dd751ac108dbe7bd5532afcb1fc8050d4ca36d73828a277bf1c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}