{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75469",
    "entityType": "User",
    "nonce": "0x1ed64fec87f59dafc2e47c59f40ca4b8e3710b01cbe2a284016f12b2c0790e9a",
    "signature": "0xf00c7c970d37e83c7b7adda18e617942057863610f263e2c9cd96514e72237ce69795894f8620918ffef032478610c32082852af5845c5185a93e08cd2eca6401b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}