{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x18b1eaafef956156c7dfeefdd0ff72c5ed450ad34f7b1fb308430e735c51f87c",
    "signature": "0x2844baccacce8a77ec28c592ea09ee853763a9b0fa04c47c05fb8e0818ff825d43d68886c236c1e79699389dadbec8550e46dcc4c691f66a54da8b987ed87efb1c",
    "signer": "0x9F3Bf79c6fEa03d18d5be4674830b152D12Bd7Ff",
    "userId": "527791598"
  }
}