{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "688850395",
    "entityType": "User",
    "nonce": "0xdbbf4521bfe27f7fb00a633571dbd5994fc4daeda3e7656dcb14af1220e3081e",
    "signature": "0x69389e73d17c5051718a12564b9bf28053af17af0b54d0f14f370b6572d3cdb77e788c9a23e215ab0be525f5e40a4d4775595979d4a4798af4c0604e8af62cf51b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}