{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb81865fdec2e3ac52731643e33281237836f35aa6f52bd8bbf2c812ef49c84e2",
    "signature": "0xa58f28e9b4b5990f9009b22b3a3f2e60781744bb1ceb32f50867d18ca9d9034b1c7424d4ad69f8b6bbad7375b64cc22ac6a181b16a213ad5ed9dda39c20d0afb1b",
    "signer": "0xF5BDF921264BF0A4a796f9D79753dCA2c9d72334",
    "userId": "69944188"
  }
}