{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x15ff8f4f63a233c53a5f21dfb4ea9a744fed8be0e5e5ce130feb8e8456f6e310",
    "signature": "0x64a1392335b02dcf576812d091418e6827b72fdd177217b861398e33d83da2c317ac14d49a790eb927d02c3f25edd78db5764e0b983232f9f843972a0181b7871c",
    "signer": "0xdA4448A94942BB1d74B134dAe4e71F0A65E8a180",
    "userId": "669480134"
  }
}