{
  "manageEntity": {
    "action": "Save",
    "entityId": "1277152046",
    "entityType": "Track",
    "nonce": "0xf6b59eab4111771acd97e08f38a8cf1927a5bbd9cacc57d3e01aecd1899cbea1",
    "signature": "0x190134d76cba6590e70b2a18c30ecb42b61623eb4df608c96200a35a904061a763a1777adafc0dc92e4ccc4e053fcd4ce51d92b0ac07ad4bb22ff7807c2b02301b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}