{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "276357",
    "entityType": "User",
    "nonce": "0xbe1079ea83cad16f422f0e0ba2898cbd19df6ee20b30c463e870ef575682cf18",
    "signature": "0xdc4d5935a9076b9bfdfcc9b4111841d6b1cbb2196d97fef55635639cf4c3c22f404f664e48a8752e5881d0e024364410be6d0f27d1404e898ec0a46c201522361c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}