{
  "manageEntity": {
    "action": "Update",
    "entityId": "318238731",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xec14699e640d07c1017fe8c85db72e8740b4f36178cc8b7e1c6ed465d6a11197",
    "signature": "0x3f0c7e7208f26f80e7f286c7169d9211938e8b0fb9db05098e9b7fdbb05df3e257cc9adfed6b1335ccf450159399df9bb486b385127f7980d7124c6041a791161c",
    "signer": "0xe8533DD8DC48B11EC063191b0ab1C7CBD9C17662",
    "userId": "318238731"
  }
}