{
  "manageEntity": {
    "action": "Save",
    "entityId": "1171797249",
    "entityType": "Track",
    "nonce": "0xeb927d170e04ad30f3e70294bb0fb558498fbc3fda368bc0813cc52f813fff0c",
    "signature": "0xd790eea7e0c70e70dfb573655c8e937d806f17acec644f229f516f5c2c44c4433e98cc309e0bc77b604c3a904cc17082e33b87dcb4327d78cf86d322c9c1ada61b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}