{
  "manageEntity": {
    "action": "Save",
    "entityId": "228305167",
    "entityType": "Track",
    "nonce": "0x2def3de328bcefa01fa6b0deac6507a1d70067693869550d284a0e57dc34fd62",
    "signature": "0xbb2e0a19dac832ff93466e821c72abf31178405875654f8cff6b818f90f802e936222500df4b27ce3ecc66d5e55ef824e8f4db2bccf30ee6209ed42bfb3263ca1b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}