{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54432",
    "entityType": "User",
    "nonce": "0x445fb13e494e765f4738aaf294dccfb9099cf98cc9a02450f3bc0142e70661b3",
    "signature": "0x443eae29260726cae25c972934b869b09c0b2ce6e920c54c96758963296e5f2f3e1f951ce3b2ea2df5007c871fea19a4772c8516974ef7fd7f250ae850e54a361c",
    "signer": "0x4Ff77Da6D5C7286ea15F7F94FdCC04a641dE9a27",
    "userId": "512734349"
  }
}