{
  "manageEntity": {
    "action": "Update",
    "entityId": "121074917",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradasxenua4u2wivp3xf4wn3ikan2g7plb3iuulvc633ktd5yxabcq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1732176183}]}}}",
    "nonce": "0x89ba2f7debf75022d5098ac42a7987dfad7744515058598522c68216e4c0bee6",
    "signature": "0xd431b2a44e6678a0acddf354f4adb778f3c6130451ac42e09b97e0f96afbfe426747c78bd636e154c1070ea76cbe5cc3704d105c007a4c9a6ad18d33f98f54d01c",
    "signer": "0x58Ba5D7017633b55f81EC1e5Be8d6aee04c544D3",
    "userId": "121074917"
  }
}