{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319758166",
    "entityType": "User",
    "nonce": "0x9226cbe70206e2f3171608811bfb8b44b0ab1c4da5f6665f181744ad9d078087",
    "signature": "0xd6a0feca8b3f55af6565d80c1033d041af7bbcfb439dab9fa33d7b1c851fa22a0e7d1047af2fc05057d4eb779c0522fa089758b4c2b21a1a378211face6c47ae1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}