{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203774",
    "entityType": "User",
    "nonce": "0x4af994ad9227a934a48b20efcb35ede629b9c07f49c8293a1505c8f6ae42d1b8",
    "signature": "0x381a4a09747ac3fbd7e4ef845b896bbcbe5444776fe3002a35da0b47384207e62d890489dfac1b4b7a03ff0d0b61b214945b4df4f1c92ea9a9d7966882da198f1b",
    "signer": "0xCF37605ee4b144e8878B9A159031027881CBa2B4",
    "userId": "36669256"
  }
}