{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72819",
    "entityType": "User",
    "nonce": "0x397c5faee8b89bff5c020be2aaa966a0c9a3a939eee1e8773f1037ad0c3bba0d",
    "signature": "0xe79bd826f7da7b1e9461e3251512f86f11e7e7f77b8300392d7491e230f03ea02d064c8f9045a614d5e75038483c1012413c2ba176a45ca30ed8936a6a5334431b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}