{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xb1439b7ea261ebca7cfe678392744065c7fe4b2d16c98762cb69ad9f3074025c",
    "signature": "0x15aafa587554fc4fb0daf921a510e2589eeef34057c08b0f7861a243cfe97e607afc4ed9d61c4ea6eefaf8229040a758dbeea2f5cb16bbc1a8cd510b7fcca0451c",
    "signer": "0x5Af531A9cDF9747df40f57531227d70F1bdD2ed7",
    "userId": "511108744"
  }
}