{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x459ceb831cd2a3df4518119712b52818fdb3d1b6980b34800f62f16d0b11d4ac",
    "signature": "0xf562c63e6a86f5e51c9296b69d895a8dc374a472d06b95b14c5c67ae345e5fad29dad784b71ebfca8ede3d52983a5c223dbd29b9162eb8e509375fa18ecd9a751b",
    "signer": "0xcb3D37b114bE91a849976077CBdF39B5F9cdC289",
    "userId": "314648424"
  }
}