{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12730129",
    "entityType": "User",
    "nonce": "0xc78232eadea02fb10e8fdd50479e86e45e3f90ea6001e5ef2bb5bb6510bc5bfe",
    "signature": "0x60e7be79d3f64d25f2814958e19a528873b38a6d0766346eb5a9711925d5d0b365e0c59db3d3cf8f0cbe2d789c14653188dea43d5ed2ed32136673594b7a6bcd1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}