{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880649",
    "entityType": "User",
    "nonce": "0xb6d66c509464dd6417653fabdb33819d97ef0c8df3d87763ce4b3c7ce3111502",
    "signature": "0xf32f1f79bc9b240b0d795f3d9556d2b81eba4e7d8e15fbaeda805435231406be36dbb3f4628e0af5db5d3b337323b3783980120d5c223164b4962cfd569544621c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}