{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3551",
    "entityType": "User",
    "nonce": "0x53617f5b68a6eb813da86fe75656de3aca0c3c8f81e2a4239834eb686914798d",
    "signature": "0x7905cb53f4ea79a8ba586643c53481e60061e7423bccaa536c7c097423faf2a54044998d2e0e44abdb9eb3e027108f9dbd9d27518ce569b6a808140f80e5eb851b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}