{
  "manageEntity": {
    "action": "Update",
    "entityId": "275799540",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraq6nskanuwmpa3gctgvwaldazrwsyrecuvcn6hivdn5qnfhfg75ra\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":638978729}]}}}",
    "nonce": "0x4b2d895c8ee39b0b00038c62a411bf83209c5eeb689c69b71b73951ec7ff2320",
    "signature": "0x6c21a2ce7307ca4f19f96a6353e9f096680d2a585eac106ad7b561f0cc2201701c397d9d41b948e96a5a67c5c813484d6cbce4937aadaee6bcb0a0f600b4fe041c",
    "signer": "0xDB5A147AE53021265B456ec04644E288A253C513",
    "userId": "275799540"
  }
}