{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "974665560",
    "entityType": "User",
    "nonce": "0x90458f3ce7a18e1f2cbceb7ef075b1ef3dbed7c3d78be9cd9d71be903940f981",
    "signature": "0xf5201004d5a8caa9b0b34e223a913075beea5d150214188848ed68cfdb5210d768b5fa4b7e045e8d552725568e9cce2382cecd3553c2d4a880597f29c60d10771c",
    "signer": "0x628Dd65404F8004a04E1C75fa3f8665E93D45047",
    "userId": "862945502"
  }
}