{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xed9359c86292342faa1226de635145d2777446de04359019062c2215eed97d28",
    "signature": "0x7cc5a270339456a0b790e41fde23c3d7dfb28c32691ca3b6d244ec678bd39d026f9cfe4cb2d7f1a75817e58d5ffce8883d804e4eccf9660224dde47556255a151c",
    "signer": "0x6440Dd7ce5eE2e610F909B08098D39f89250637f",
    "userId": "503764788"
  }
}