{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140587",
    "entityType": "User",
    "nonce": "0xcad7df5781adb960161fac81ee568b059e8e1989f5bb2fbf049d4b7166e3fdec",
    "signature": "0x218d5ac3088d8998f3c1e63940044da152a4c537ba91aa90e584bb179179c1816c1acef4fdd378aa04ba5d2b8303cdfe6dd3fc0943f41b6f7c16e7e286c90d0c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}