{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "104731",
    "entityType": "User",
    "nonce": "0xd64f7942ed8ce6865cbcb60fc5fe16d694fc2e1b97ff714bce38ce44d7f74957",
    "signature": "0xd9099d2afc405bd834086a9f4cf6df0eeb2b2dfa595abdebb874f863b20f71866b93743b6acff0902ef8f90c3847d42cf01f3d2be32544e9cea3ca1fbc6f4a741b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}