{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xbb05c086d4a1898a8163ccd0dfdb651c236c7a6806fdec6aaa262d3a5fb43fd9",
    "signature": "0x135e53fa3159f0556012d211fbf9add932b2f7686f497b97ced12590f0654cf954748871346b3ee1d01581f41e229672ac6ff98d5dd3d415858983c6260c98a01b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}