{
  "manageEntity": {
    "action": "Update",
    "entityId": "763983893",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe714e9a6dfe11fcb453c52f4508c0720567fc69dd3ab10f6b8e8c67a7634557c",
    "signature": "0xdb03bee246f67e1a05b55579b24c9c7bd1484f7f0275af52d94dc51e2fd702041cae41e8257b8955e8b33d7bb8e224bff20beb6fa800c9485649e26cb09bbcf31b",
    "signer": "0x7491fDe640F47Eae956591A6c69c5E761cd41267",
    "userId": "763983893"
  }
}