{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x03bb8a077c4b7671a5aa5287ece7b41d19a9726603947df064751932726da157",
    "signature": "0x1a3c0578ee6d191167129c4fa59b7d7a51d974ecd6624d34145bc61a67a037de2a26a9ace9058c5cc8fc937190815ebfc6d659d466ecee7bd9fa56b5a62e7f371c",
    "signer": "0x7BABCBfac3652c0401f5f7C4c5d13Db162EC2f83",
    "userId": "281853382"
  }
}