{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844754103",
    "entityType": "User",
    "nonce": "0x8cf23e5deb07afbb35ac59d15daf8f84c50b2589b3a00d4d5a13492dab660159",
    "signature": "0x8567c999a10050d70f421a73c6a9503833a331e9df945b8e14610cafd0b223994f4e0d47cf013de19af9712daf8e37fda51e7fde78e8761db508f484cf17f09f1b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}