{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1537",
    "entityType": "User",
    "nonce": "0x452226dda471f68ada13d1f525d07312505727aad7b726ab33f836d445313a3e",
    "signature": "0x63b1e2c1e63d81da0cc496aa309fa7cddf09f749f82b08e0070202a5ea9d9698607814e57bd6612daf1666f0da140967fcf103a5f93c3c053220379bb87c815b1c",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}