{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaa91c0c03dfe9f35f8184babf4f8a50a2c8b0bdbb3dabacffd28d127dfc54e6d",
    "signature": "0x2dae9faa5e52cfca3fcb1297e7534019e5fa3079cda3572c5e4ce8e3c56a56a01c57076404f11c8e73bd0245da66a166f174b2b5c31d0c307f56fc55d36a1caa1c",
    "signer": "0xE4602a924B4ac812C947720727ffd05EC9d8280d",
    "userId": "714091688"
  }
}