{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "806873848",
    "entityType": "User",
    "nonce": "0x54b2bd9dda71c7e6f7a0c99087905e4204de51b2da99b2f90b7a77c13a311eb9",
    "signature": "0xad707f27c2e1bf69ae3b70e00e537a6501cd10bc7aaa6e7123c6846c7441401d7f0c3d77535bcbf2ea3b93b71be2d7d2d2c41a3ff951e476cf5d5dcd027426241c",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}