{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "341",
    "entityType": "User",
    "nonce": "0x4dd35acb850f39e0c427f4a79620ae7268c0b71782f8035fc921a3ab27f6999f",
    "signature": "0x842d8e125b0cfce91c53ddb8fb556a9d07307a9f4dc796411fc92ff857652f526d0ef164b8523e2b273d22972082b8da039cf613ff1f9675b8828faa491942991c",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}