{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6441",
    "entityType": "User",
    "nonce": "0x1197d4599818d743ddeb780f65cdee47f35254b33edaec461628f5c4d18322c9",
    "signature": "0x6c964437426f17a5181b4a0f7a79ed9e1da75f56656d3b1927e87bb54adb908f7fe159b74d0beca24f3d59ae3fbca69bcbf1d372aa85d62b903b13259d49dc6c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}