{
  "manageEntity": {
    "action": "Update",
    "entityId": "583264378",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajeh3ka4nppxswjiatddgeru3hmuazo7c3i7t2pizhyenpwsuu3kq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":643838207},{\"type\":\"playlist\",\"playlist_id\":475892783}]}}}",
    "nonce": "0x5128b7369138d5c06c8e66f48ff90c764f67858db6730483735e9197f82e27b0",
    "signature": "0x4c207c07c667f8f0a8ff5172aa406c76560e3beb712e5f403fc8ae80454b60392b5a14624a46522cac7a547fde778235380131ef64495540d565d19db886595a1b",
    "signer": "0xCC0d2E17031Bb2a4822bc4c54ABE3a667ef3D494",
    "userId": "583264378"
  }
}