{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "517391017",
    "entityType": "User",
    "nonce": "0x76d8d2a8d6e7bbdff3e5798b209b7ebe99c9938d92feff61aef1a7a40f3e7b30",
    "signature": "0x595a21d1d0ad77791f43578c6c185d096209ca512b972e13246dd119c432adf9357d58cb981e36740f50b1420f37a596a19d2e8619efac7368d2b16e16cfc5041b",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}