{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "832487273",
    "entityType": "User",
    "nonce": "0xf4f1d3404b67d03f3bc58ff0fe68afde617e6b3bc6b5685cf1e2a7824ef3c2e5",
    "signature": "0x4abd51cfe9a62aa2b127113576630b3e3e1e45937d026b3a6fcf4391edbe3d462bcbcf1ed70d2102f41b4ff3b4fff503bd5dd8b20eef32c8707adddb92a92acc1b",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}