{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210444",
    "entityType": "User",
    "nonce": "0xd745b0eb33af1112b90ec0e1558fc3d0beb9fd74014467b0bc738f686d8d90ed",
    "signature": "0x9b837832e14dd88484b63258b05748493572132ebf1adfe4f7bde5107c0c922356d531b43fd7bfd6eb75cdaeab5dc1d37aafa593ec4bb2eae69c8f1de7fba8271c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}