{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x14e40ea9c47d9234cca223cf179b5ea9e17f0a6a8317b7fb1d1978ff80a246ff",
    "signature": "0xfba593126f3bcbda2c116c3cee129aa203f4b43c40abb98cf02006d370fd5da34f51c395400443ad6b34d268873e1d6f76c2a4600dc6aaed96580503bef20c581b",
    "signer": "0xE3302ea03434dA998C2fcf0647E2Ad4c5a29e4f1",
    "userId": "621042450"
  }
}