{
  "manageEntity": {
    "action": "Update",
    "entityId": "556255982",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9511cbcc827b865efebd66aa3ade76d5e91278ad4b32c1b0b0c9cf6d695e62f1",
    "signature": "0xdd035be6dfa6ab546c146a092a2963b992c24723007406c3978197c3419a53137dedcb702c38316f1d8727ed1ca38feeeeb3835b4226d5bb55c6e9c767673cc51c",
    "signer": "0xA61Ec758eD62E71769712843066E0D2AF592b23d",
    "userId": "556255982"
  }
}