{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x99f0441bee02e0df4df61662be10b07d9a4d4d17d38aa9c5f1390e78d81dc1ab",
    "signature": "0xa6526489e6212d499b5332d8b7bcf273db76d27c21d082a0d64c535ddee7d67c632e4f2d6a94ac13f533887634eac9b0062c95e5b1c5f016d62da2d5635eaf261b",
    "signer": "0xe4dcd637979Ee1e0D4B8DB8A80a27C43fbCB7c67",
    "userId": "729889907"
  }
}