{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x21c760580575e44da9d56e3a354c6388cbcd2c8d1f68305c7d2798b44d70f402",
    "signature": "0x11518c806a650d60188668dd27cc8ee1b06ed7c760716bb9575c91a2484da57b529be5dc22ccc9ece8c82fc778340e4a0bd7244da448040c5ebfaf84339a39ba1c",
    "signer": "0x225c4337686813FD2f7EFE2Ed3C703B9248f35b7",
    "userId": "584342118"
  }
}