{
  "manageEntity": {
    "action": "Update",
    "entityId": "452108975",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera5vz467nmbelygc5is2o4pdeh4dh2ozr6i2paegjd2knnjp2nuviq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":875662475},{\"type\":\"playlist\",\"playlist_id\":223095188}]}}}",
    "nonce": "0xf99f9ab737c633223cb89c42b8ffb9d245415bf9c0048042a5a1d4fb7a05b0f1",
    "signature": "0xdc0b6534dedc88e0e0ffc4c1f3535c81f85a51a2ea861a730601868ae06e660338ee40b4b6639a15b61d87db934c85dc149946789fc8dc36d2b3bd6c74398cfd1c",
    "signer": "0x1Ffe2D421cF901dE6a191F85092964B85B3Ce4d0",
    "userId": "452108975"
  }
}