{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "529409199",
    "entityType": "User",
    "nonce": "0xdb5160253c3e87de4b56302339610e216c4ebf3d5acb817a21a497ee4c6e62f0",
    "signature": "0x16be24a60fcec0e795b67818c2f635676cc24133fe653f8624de1136b7e262a13e102e7f4284f792505001bc2cfd471a91e4367c66d0fc2db16217737fd808ed1b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}