{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1831424",
    "entityType": "User",
    "nonce": "0x844f4749ef38f5942e55fde3d5c7fa5941577a6f858bb7c22b03b3a1939f26cf",
    "signature": "0xb3adfc4bcd9008170b34f4e464f4f731746a9fcb3cdea7298febe18314f390250d65c442b72bc278860f10cab9c3459f4c7d98b341ac5b36d28eeb659b5d1e821b",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}