{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x22aa10b62938f0b1386e39bee27db348901cef1e72d5b4943614aaf32993ee4f",
    "signature": "0xc3b3f1389aa11790ef42d3c2cbc0dbcd5f10936043c34f15d2a4baabce16a5153ca9492e230b7b06646bdb9593033c13b86a930346415204664aaccc2d87fe6a1b",
    "signer": "0x64F598C81c0625EA190d421bEe9C604A9EaD5ea6",
    "userId": "462839245"
  }
}