{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x5fb19dff93c782f2516d3729d25c6f9c30b131ca9d6d246ba8e97cdb3c688340",
    "signature": "0xc58c57ad6172c0d7eb216972833552d39ac7c4c3f3f8455f82111acdbdb6028c5b6322d7cbb2953791181d3a6e42262a64528f8481de19d05e675115bfea11e71b",
    "signer": "0x4Fc1bdb3E02Fc0abaaE135c7389328b81538E857",
    "userId": "369736730"
  }
}