{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64670",
    "entityType": "User",
    "nonce": "0x65b4a6a1b462045160ad044b726de286d844cca75436feb70ba7ad08fac6c0a4",
    "signature": "0xbf64bc4a0d361be87aba320582cec80b2ed063c7d6c5789b0cd327a2e5263b10017e9c8d00f3cb3fd89278b59979df60013e3f72881add79e2566f7edc2c1fc71b",
    "signer": "0x51b3C55CCBf38453853E1fac9983a9F06CB12BCb",
    "userId": "93176421"
  }
}