{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x2e5417441cabc0cbacadbfd3610f0d641ed594af1a6ac1b41e7e7b0f6e9450a0",
    "signature": "0x9aa300b71159f019168454dbc0ac29a65d428ec3795aa579d562b4b2d7f6f75a0bc1ae5f97b0126fb7672309205d4f9500c639a3fd157871385111619e7cca851b",
    "signer": "0x8fb06be829c5718Bb968af1525d910B795617ac0",
    "userId": "950478625"
  }
}