{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144478",
    "entityType": "User",
    "nonce": "0x6a9f61b69a654bfc8c55f1f08d0cd61cda611e31259cf44c429c010ae26a2d72",
    "signature": "0xab8d2317e3c951fe3d438f97ef8c2c5e2e7b540f4ccb613c16e3baefdfdd75c176610f79dcd82be647384680ec50f3b5614d0c84b32fceef3f3d45cc9de187231c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}