{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "864400174",
    "entityType": "User",
    "nonce": "0x3cb3b0a6ad85a40dd92903bf608b62ffb46f5e0b84868e376e13bf35fcc16e21",
    "signature": "0x8ab90bcff771e2483a02f0efa3a14f79c8f4588dca8fd0c1ad914efb83f928f24fb3f05ece1b6c507e83515e63eedc2fdd8b83a63d05a5e7811dc9dede2bc1431c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}