{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "172521",
    "entityType": "User",
    "nonce": "0xa324abee809e80154f314f7e76e78ccb207eb46d10fc9dca0657c61ffa0a9e61",
    "signature": "0x5fdd2176a1c59c63d8740706f955e1ac199dfb1fb8c123464c7a845d8619a75660ca1e3b016d286cebd08a793d813ede3b5295c9d87da03ff8521184c21cbef61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}