{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51775",
    "entityType": "User",
    "nonce": "0x9c669a8e800f0d042fc9804814255756f5b73edb8bdc909ab6a0f65cbcb101cf",
    "signature": "0xe3246a4dfbb4f01bd80118acedc66ec5035f5377fb8698fcff08995faad1b593527dd2210ac1582d09b25d1fa5e3154d7b04863b9d68e16acfaf959c14f952311c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}