{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0xd0a6ef402582c4ab255527a88d9a3438d80d9a048774bea4573cc95954143775",
    "signature": "0x0c4f6586cc49a297a9c64f2462b947e50dacab89170d32509d9017286ac7fe734aa1b903b980e3f80da464a2cbb13d39c94ecff937b06bc0eb1331bbe446da0c1b",
    "signer": "0x571CC6D512D6f6fe43A3EDFE62123a52785d36fA",
    "userId": "388520"
  }
}