{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2131",
    "entityType": "User",
    "nonce": "0x400a01946b4df83ee0abf6a177b656ffa804d634821424016e0e2a15e3640891",
    "signature": "0x70e9bff04a68f8296620b8466d146c84026b3c7af2a72beef6f9cfcaa0a8684001f1987df5867d9df038c92b61c3835cb222c5abe980c3a68d472885e88b4a8c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}