{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8223",
    "entityType": "User",
    "nonce": "0x50e669a6ba822c931b70e835288b78c81f87b4c565df533ba9efa8e4ba7d7236",
    "signature": "0x0ec83ce3fcaac350cf0e05c0db8f2b9d8210f7b03501e7d2d83312dca4bd07b144a88815dcfc77ae229bb006f949ade4fd9fc4d456370b2a8cc2bb8b3626e9dd1c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}