{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537944538",
    "entityType": "User",
    "nonce": "0xdaae59cda7bfa43b1cea5c6bb3b6765f03294c4ef466ac03dc209de4dc0d2741",
    "signature": "0x471b5ca814ab127914cae67e1cefb01ce8c16931b69d17a1da76162f2b2f3770572c810ea99036b3a463ef2b23e5b97b23473da75c355293e531a11551da24711b",
    "signer": "0x5d38Cb184274A585dC79f62FC669Eca2c573005D",
    "userId": "867710486"
  }
}