{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "627480312",
    "entityType": "User",
    "nonce": "0x6c993f9d2587601ae81498b13d1b13909f0b76aa78f236c35566fbeffd8ae471",
    "signature": "0x07f5ebdd407519d81d0f60a47f967eb2a00489f721c720bbd446ee5f65c6147c09bb7472914091c6f0b5a21ebf7bc9d98242db7444cf0eddeb52222e888cd3a61c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}