{
  "manageEntity": {
    "action": "Update",
    "entityId": "588449107",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa616d24c81e60b419873fe694f6dc46629274c4d60709c84f59bfb3061a31e37",
    "signature": "0xa4fc30e2bdbe6556b83bbc06509aedb1aca74b24c0f630b16293e40d4c36807e006a4d5fc9718061443b7260e930ce4e148b51de672d67f13914070db3257df91c",
    "signer": "0x0B4CBD3E1eAB90219fb22Be62f1bb518f43fA87f",
    "userId": "588449107"
  }
}