{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0x05627a76f81f6d7a9c46225ca9d7ffb7710898ee44ba603836dd25c36972d97f",
    "signature": "0xebd15abcfcdd855d7f929bbc8e17ba33558b9d048da06e71b8cc4ef72913a4331d35d28fd7631522f6338ff43993a6414c23ab27f4aa185aff3c5befa5c258e21b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}