{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313995",
    "entityType": "User",
    "nonce": "0xddaa568f1887c0c80da968e5581aadf19c85629f2f3d1bab5c84ce429ff14da8",
    "signature": "0xe3b0b023704ed65fa1a3ae788817cd137dc78ba653d0721e2c5e6acdd9b7ba122d7d9daa0bac50ec38f28d55db3e97b5e8f6cd435f6f66c20f3ec44d9cc3ee5f1c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}