{
  "manageEntity": {
    "action": "Update",
    "entityId": "378891044",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0a1683a55504f3c7cb9069ef7b2e8c110a6f271bbda22bd60bb1fc013fd8295c",
    "signature": "0xf86a1e95448915d848833bd35f310f631275b208f2b87997a6e3a2e43bb00d4d69157d0274cd7382c91d1ed417b003475b6d3cf85a36893e581be5942fed5bc81c",
    "signer": "0xdb3Ce61d44D9e0d07fd2c96c9d3eEfe4ff9d1DFc",
    "userId": "378891044"
  }
}