{
  "manageEntity": {
    "action": "Update",
    "entityId": "647687608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f09fe38ad41569624c472caa1afa8a05ac7235e12735d5c143431c41f7b7b0a",
    "signature": "0x6a5e4bb5c4e9c50e3f687592ee1aff60d4fef97c422a614431dafa74cf88da36572d779edc51189c2e341fb12b4698a2618ba2908442bce331bbc6e822e463771b",
    "signer": "0xa550fDFd14255Ffc54bd99d354CCE2DF00461Dfa",
    "userId": "647687608"
  }
}