{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0xdaee540e0013ca84384147ba78f8a49b18d18a41a17c4cd0d9b34bfa0df46972",
    "signature": "0xd2cabf6591e9dbaa0b11593ce42f7e5e8a94387eefa7d4e1578af3a391ed8346247503d000e0e2dd113b714a8474c22c282b9201c38ce8cb00ced6122276d2051b",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}