{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x54bd3a0e5720ec70b60a31706a246483ac9d57f973e4e9e3d7028ca4b7020998",
    "signature": "0xee88ffb72479c2e34bad96eb849016ca922d68abc1834d87ceb0d6e440e06fbe1adfa94eef0c2bca28448aea2d76730528c7f1cd2d4262903119a6bccde566a41c",
    "signer": "0x0e1a4F8bdC447C6130314F2575432f3DeeaE6CB9",
    "userId": "148979301"
  }
}