{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0xa42a6f8a8671a56901b7604c5352d43b612d253808f480c46086f4a7e1230973",
    "signature": "0x8922ebcb9827404d34966d79e91ac4c54a34e102c1d433b02139487d02baf680677c22dc94b96c2ce88b09a1200b752a56a148543f2b83fc27450c729e3eed831c",
    "signer": "0x3d3C9a78785e201CD119b8f74d7d88D131bB3cb9",
    "userId": "350266629"
  }
}