{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "570480795",
    "entityType": "User",
    "nonce": "0x6b195814ce191b27d3036a768901ab9356da069aedcb6e5751b57dfc386c0a53",
    "signature": "0x5e52a33d602836c5b5feb52ffb7f74fa19e3ac86faa56335df6b98cb46f4bbc81a12345bc30e957ec0126b9eec34be3d7de374ff79283cb2e5c699da8e31ed311b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}