{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775393813",
    "entityType": "User",
    "nonce": "0x042582d8b9b49b226c82017bebf698bb0cd514d106037b73ece04cb551eb6fed",
    "signature": "0xc7a1580b794c0ad9ef3f5ec3fb95d614373e2f307ba517899e88255285ec617e7183ff537cebfa3c904fc68744d11251a10c8795a94e8e0ad8ac2a00696529c81c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}