{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8151",
    "entityType": "User",
    "nonce": "0x60d39487953ee61ec8e2bf9622b30716e2ad3dfb157fbf21b17c29864a188775",
    "signature": "0x1545f668a6284414dbcb13f4d35d1702570552bbfa9aa7f2b39fbf36da5fb6727b457455810e7f7b22136a5a06fc015c731e79d40403eb68dfdfb92bcd2e1c831b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}