{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x326442fb933f9e2d3ecca06032b20023faf07e4ba2e10f56eb5017eda162992b",
    "signature": "0x844e7a65281622ea6e5085ded0a283d4fa67194c27d4740459668a0b3b6fa5dd0a3b0e0574716f9c70301f7e1b7e1615037623fb1216c27c13c2f2f83ab418a21b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}