{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330245235",
    "entityType": "User",
    "nonce": "0x13f9dc429180b108ebc263fe5e008b5367d549b0f0c3242608a18caf0a405d85",
    "signature": "0xd8711b0075a3b9bf8df5492a5db8bd11a52c4d02d15675c71c07d14d9322310852f56978ef96a74f1e4d0e42a861f7469098664af72d9e0c46535c163c37fa7b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}