{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a46fbce3807ad647bfd1194f647b87c33de792ae395e20f6f99828c54529a76",
    "signature": "0x6ea62176a260f799fcd8f0da7e17c0c54f5b4df3776f079837f279d6ba99599924518b4eee39a03124d957a3c6b92a41346c885eea2b7726dd81707237bdd0861c",
    "signer": "0x17E5Cd991203390519d2FC47aDbaC0DF4B27bBe3",
    "userId": "300815705"
  }
}