{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7504",
    "entityType": "User",
    "nonce": "0x86a6987e215a3f6aa0559a5b6785146eaf8dc0f9a91b65b4e1539a051e653d5c",
    "signature": "0x2dd44f0a7f3c9621ac15226fdd9c90a3185c334e043bbb097f8da31d369d8f8e7b18c3800fe64df71587c4796eefa84fdbe513a4a484b914d14bc47cd3e268231c",
    "signer": "0xc3414CC9557B9660629DE81a76b7466fbE8CE07d",
    "userId": "902798305"
  }
}