{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x148d55c676292b976b1f5844a534b274704d1e76e419c0cc5d1ff7fb82c41473",
    "signature": "0x1e010a8c5639d52ba50acdee56114c07796754e4f3fd1a6a4e09ad085d04dd9a75d61449c90c72f6eb7f434d0d8b6fc2891b2c1fc2f94f3a600698dd7111095c1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}