{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774209",
    "entityType": "User",
    "nonce": "0xbe3b2da1af93e6aea30c2f0065fc3e3d6eb553b5380ad0f7dc0ef2a70f5d9095",
    "signature": "0x91930d40e724d91af85d7792305a3b14524f74d484657a585e178d959c1ceccb3d685e75ff7e39042723cde18aec61133ae62e2d5d23ebca5e6aa0f4bd2a1acb1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}