{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x12455240efa4cb95df0b4c842564a6b51b8f431ccbb2a00c6c8d4280d61bb44b",
    "signature": "0x432e7b14fa4e52158b844b3f3e4fa39c43c159d2f57099428ed295c8a52b681367bdc36f824f154b0dda6adf58b5b4dcd043c54b76059759b46d72aacdbb2d1f1b",
    "signer": "0xcFD42df510f3Bf08CD7970771503D819f7075B31",
    "userId": "633204622"
  }
}