{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0x910cd37357f9da9bf1c794c21a25b2c9e02addcb590060175258ee6f0f023465",
    "signature": "0x8f202fd9eedb42af4afcc7e4c5e13e70f8abc6cba9578bea023d60de745fab7543b68f618eb44c5b0ac16ec2a1611455fc9d906ed042306d5fcbd42471d1d3841c",
    "signer": "0x225A0F26D8c354e4B16725295bDabb4983d0F6F1",
    "userId": "994175139"
  }
}