{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7f35954cb33e07caffce24c8b836c99faf9d38d49fe498168ad184079498d678",
    "signature": "0x407db15cd82f800e374f72a86e397b797523df86eb9c26bbf61aa25a2801580e5078cb223f959213cc8c1ee5226e85b3c3585c9a1e5c49b461a21a30013920051b",
    "signer": "0xC6a90B659bF7B98a2A29D5954b1005e8bA135B50",
    "userId": "262348521"
  }
}