{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423422344",
    "entityType": "User",
    "nonce": "0xc90aa6f7560afeba10896d8f984ce92d02c843f616113d3a26bd2cee18b64e4a",
    "signature": "0xabe00ee23ab42161e52095b70ad5eaa8176db014a936738ec6c552c5fff2bba82263cb31543ba46872eb60616544686870bdb3b6435ca2c26673d8622b01110a1b",
    "signer": "0x111672D93C637AFfa14f6c307bDbe0050E26514C",
    "userId": "83470708"
  }
}