{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42838",
    "entityType": "User",
    "nonce": "0x10766da4ee6ab25f762eeccacb943bd8d690260bf8e2076a13b1374fb33a43bb",
    "signature": "0xdd8c66fa6127617a77fa598337db0165e633f244cee6fa41bf5c3ce1a695c54349f3353d967e694cf28f432fda0cb2dd03715a3e55f7dbf12680e54735b530e41b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}