{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123597",
    "entityType": "User",
    "nonce": "0x392c683df9cebce465874bec46f99c6cf7475dcb2be423d21c186c3884e7a51d",
    "signature": "0x56db6b349ede22b0ef347cb7ea23487f9357c7c006f1ef191099bd2041a55f3773eb23adf4e878f768e42c80c4c8c85356a9adf58ce8d63cb55a01d1e82ed6061b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}