{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x3f38ed75f472392cc1d903525a1d22bc90857a27caa9628b9db27bce04b9c21f",
    "signature": "0xb6f4e4d45b74206fcb204fb6f9e6d5806fd911c7b93d6cef049909e92609df2265544f3aee5395e117c07174d41680bf3118ce43da2ec8f93a3325753bd406d11b",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}