{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190187",
    "entityType": "User",
    "nonce": "0x7d7a03f065361e17bf5c69d4704687e9bc9d3fcb4f4035c8e89f2daed405474b",
    "signature": "0x686eaa68f83cf6c0cae6d326d6fb5d903af8459dbdab4b19075ed232db23a3d816c82fe83720136a8752ebebad44a3ee0395c9c1c8e1325a540c8b35a907e3fb1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}