{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334991",
    "entityType": "User",
    "nonce": "0x83fd5e565b136249e61bc64d9f50db553e027ccf36d36828cba6208aafac3375",
    "signature": "0xa96d0f9f5e7b6d9df2f3baa7e17b36e4d9c1e1aac4522a0360d654563f1bcf8602483d8836987c5b5131883d9946bb68cbdf16f54a27fd87f0eacfc5a59da1791b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}