{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xd00290514d99fb51f49ce48d31f451a85915d2fdee1ec835617975bc0fd92bd6",
    "signature": "0x6a55b4e99f6957f4b0f2718db3f9f78b5445d6854513e67f2027504cf2a8b0ec226b1c8c4498f1c91b7ca609e88aa52d8f3ab5f2ff464ead687e53f006e612081c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}