{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333763354",
    "entityType": "User",
    "nonce": "0x008926109f14d8d825f1b303888e7f0d92e4518992be1289b6270470edc4ecbd",
    "signature": "0x0120f627d08fa4e041097f9825d0d201f9d85c67c3654776e9d03baa0cfe846e5f8d77c1ad88fb702501b8473f10b6de29f41545ba2d908ae30e445a01bc5bd51c",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}