{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1464809",
    "entityType": "User",
    "nonce": "0x8670c9f615a4e3176e9f64a2698755d309e12d229f4b431ad69714923ecb5455",
    "signature": "0xd83849de9704203f59d626117177fd6408ae1cd0d1002bda1e231b3ca7da0f263f11742617223ea5319c6249ad7acb072af6e020a75283e1a2dac7345f8f2b9f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}