{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x8051725965751c0ac7fa8ff9ccc9e7075281bb17a6e649b951e925bada180231",
    "signature": "0x98c662684e21e490b9aba7efd178f7f9b119e81410646c60e2978ce5c61f5ff32653f6611242abbe5c334461125fbf9af00e2981dec3d0c021613dd9661a80101c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}