{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512764",
    "entityType": "User",
    "nonce": "0xeec0a3e50130991bb5e5e5609fb0ba5fcdb98c28144259514a4d76dfdbe5bf5b",
    "signature": "0xdf1f4c6a73b7785df40fb2df5090c8615c52241f2c7d7d1fd02f38f0dbcbddce15551b739ea31231fff7e2628a2fd21594a0f3caf7514c00d46c1798801324281b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}