{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x480380ae32efc93157a5196ab9cc9c683c4c063d4747b1499ad67a2debd190ca",
    "signature": "0x8efae06db7d7a90a249faa359a43fd787b23db3d91e0aedaa770427c3d0d9e1c36d0ffb0a9fa431c4cfb131cef8a431277d04205cae48d9c9f66bb534203d1961b",
    "signer": "0x8493eB5E11cf6A8721550b1FE686220839817B51",
    "userId": "759225695"
  }
}