{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1301",
    "entityType": "User",
    "nonce": "0x39771fcfffc8a3ae70f324ff290a20cd8cc65c62548358184679a3e7177acb9f",
    "signature": "0x578a1c11081b872d73682425e5ce3f22cd80d46a59ff5672b500f2fa4cff41b323a960ae2182de47cc1cb70227cb052cec28d72d7cdd3d93ed4a974010ef7f841b",
    "signer": "0x77716b11b242ACc386023E99B7e647CaCCcbb8b6",
    "userId": "126786"
  }
}