{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1439773",
    "entityType": "User",
    "nonce": "0x581343ed7980332e4c34b0bd2459d84c9b36909a1bdda7152facf0a767c0aa9c",
    "signature": "0x2e482b4a0f8619b1834bbd0ab7dedcd62d0378c20d829966d25e0bbec3d579fb22e4b73a564d09d4f691434ee0c2a94b218a981cfa86ed1b5137b8abb475ee611b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}