{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "109847",
    "entityType": "User",
    "nonce": "0x44a6dcd0af4eecd93172e28b9094f0435760ce07c3a8a277554c733ce16af502",
    "signature": "0x9a0aa6a61b4175fa65c664b0e3310977f37ccffde5301682f1306d67ea4aaade55d78dacf48c5185bcca364c69497740ed817702df6b10c125bcad5ff554cd581c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}