{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124978",
    "entityType": "User",
    "nonce": "0x9ea7ed35e4e519457ea935cf31a5dfd8fa2104589a83de2b5468cf83ec9a5328",
    "signature": "0xcf78ecb7757880d4dc7f714b95de53661a020992f100d6617e53748463d30c267bed28dcfe4a6c8c6a9e832bf163f6e6ffbd174879f29fc2009f56eb7eceeeec1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}