{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219620",
    "entityType": "User",
    "nonce": "0x6741da5703b890d91544a0944caeeef9d1ea4c0c0def478cde5ff55e6ec750f5",
    "signature": "0x26b56ef1a82d3e0f8bc4b55fff53b34d3b316758aad14051adb62c8360f6d1c745893bbc2ee37dfc010aa43c52416cd7a8649de595b77804a6e1c6c406f1881a1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}