{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45f23295729cc11252da708c8a896045b94a2196972117b72da95dde9bb01655",
    "signature": "0x8a63405b98c3ba42c89b139fe3e2e493aa2c46d74a19e3f14ae2b51cf72d6e6609d08e85bad3b9b9530a0c4b4e89c2d67ef0c2dc76742ebed97dc15c15f565171c",
    "signer": "0xe45993638Ef4ca9ce605df45C2cd924d8539B116",
    "userId": "90129335"
  }
}