{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0d6b21d7093b3712107737306a99c5ffcdd5c8eb6cda4627777028b6527d77e4",
    "signature": "0xe7e13ab258db41f39cddac2583ca9a8dae58b3378dd9de7b6051fd1e45adb623046e4f2c2fcf8ea40a1cca46bbc9e2f1e0db12a581dedb8778a528d88c282a921c",
    "signer": "0xd0Ce8877A6844011c1c4558B3Bca9b680f45A635",
    "userId": "747618125"
  }
}