{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc9cfa443195e505ad8757e9a584a5be5f372194444044ed45ca4ba8195a48347",
    "signature": "0x51e899b890c78503075786034788c2309d4f72a5ece54a9586320519a0ef0ebb67f0a6833c071ad18379634c7037fa1c877384bd3f94d33cdee163247fa704ea1b",
    "signer": "0xedC29E435b9BD7383Ba5e9eB837210081aD4b55f",
    "userId": "560719922"
  }
}