{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42001",
    "entityType": "User",
    "nonce": "0xf811c9cf02d07c297de5430b86951c3f55625e5d5d0e4ffdfb286e3303544685",
    "signature": "0xbdaafad04a28973b8c288414c5ccb1bfdabba300266448970ffe101d6e80fc462fe1c621d000bbf6e174767f1c8df197c3f33fee153ecf2c27501d9adca4f12e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}