{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x4a0cd58e03402564bb8b2a9b8d0b38d70dfbfc3554f0c5a63de99d00f4aea6b1",
    "signature": "0x3a07f4c6d9143a0befaa9766df90f986cb5fa27cc930b6234d8eec026cb75843252b39856a3fb202d2c95aa733f9c0f28ff920c39896459526d214e627741f3d1c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}