{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "357901526",
    "entityType": "User",
    "nonce": "0x8f22db9114dd2659f658e493ef7643f3cbc0205d03175ef49052e7bd4b0a3021",
    "signature": "0x4990d92ab79b17b03a5d89729ff6cb1d1a939536ef35e6de1036dce73449585545af794b7fc0d62134ef9c265494105db631adf97d465019b9671004737925681c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}