{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446983",
    "entityType": "User",
    "nonce": "0x55154786422c76b61dc806314f6087c2f61b1f7299af5def461315aec763da04",
    "signature": "0x46748de0df982900fcd5a15f425da3ed76e1248b0b44fbc0a19859d9ebcfa5c2375d7757b52d49605ed2c34e202c451ea92715852b1a1b8ea39384aaa2e14cf41c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}