{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348012074",
    "entityType": "User",
    "nonce": "0x3e1149f8c865b8c530b6fe809ad494fb280d4671ade9ff2547df29b276845d4d",
    "signature": "0xffe9cc02e2a649466b0272a78acd23e15772a7d23fbdc0e7e18f336257f5b3df55283680e085fe55b55e0ae84e4a5cd8976a54a6da2f907b753a74dd755269971c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}