{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "529301447",
    "entityType": "User",
    "nonce": "0xe189b276cfe8fa0d5606271b65180eae495eaa930efec52e0fc7f18d517c0cb8",
    "signature": "0x3966501687a63b365df85421c9ee54d4510cb5c1e571df1abe123f7ce8883a3861bc0eaeac6e50f217ff63172fa5aae8eeac240c522737a2ae253262c11e675c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}