{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a4ae73a4a2b0b2510b77a91d48e5270875adf2b86f31bf38c4f6b9b6d6bd274",
    "signature": "0x29dd67f0eb0c34c485b9e407dcac67d426d84446d54baf8b10a8a56931db63836c79e41683afec86c118298bcca459b3055b0fc55283acd7bc91c3500acbd7271b",
    "signer": "0xc2c8656bd0Fa090bFF4e39408ce918c2D9fA6C84",
    "userId": "558054436"
  }
}