{
  "manageEntity": {
    "action": "Update",
    "entityId": "325461301",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraghfjtff53ozkg6gmjoievq4dnwzmqn5awegbdkwz4tf46zo5md7a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":259034585}]}}}",
    "nonce": "0xf3c1faf9f5bcbe68553070b942d4250cac73b18b54e6d2108059ff750de9a16c",
    "signature": "0x5e77fddc318baa9e47a6d0b8f6dbe40dc9738ecb2ce27eea228f90c01f00412062ae068a16a1c2020a23aced490813aed354a2ba85d0626ccf09105fdce1437b1b",
    "signer": "0xF0b189d63dF83744c2388d801b25e9bc50F9AE64",
    "userId": "325461301"
  }
}