{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "529409199",
    "entityType": "User",
    "nonce": "0x23f25265eb5efe61cb5ca889409441b40213b852b1145bf1a7c018105d5a2b48",
    "signature": "0xc0514ad5086b896b446c6abda5a6b0a81039f56330aa113e00b378ca9d6706d200c01b063343487311eb0e20d7fa8a74a820b99fef6c9de6a8ac07540d5394d41b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}