{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404814",
    "entityType": "User",
    "nonce": "0x4395eed75d3f587566f65bcc22c77a400c2b63d46d9d872dbffafa5e909fc5ef",
    "signature": "0x374842d9baa7e6e3910088ec5b6f7021d4ef4622d4086d968b43869a6a5fbd781bd54d30e5e4e22258eb5d772abc99358af8a9a158e379ab0f069fef44b00f3a1b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}