{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3cd2e99e60c44b311f69b1b0783007008704cb0494ee7781926f39983361c74",
    "signature": "0x0c18b64af9ad0ad70fbcdaddb4b90a6fb08c1a60110ce86b914f2a51567f45d650c7f4f1095bffd029aa618dd17f716f099e10443d239c96e9005edaa73aa77f1c",
    "signer": "0x49aCa476D46A8DeCd8789B82a5E5c05d36dF4FdE",
    "userId": "305528134"
  }
}