{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345070",
    "entityType": "User",
    "nonce": "0x02839142b11d86b71dd3e6a66e388ee31717abe3fc0cce61b10ed20766e5faa4",
    "signature": "0x44e80d4f97fa4be9ffeb1ac9d8ed13e0b2fdc267348d81305690a85fb428e44a45ac8c3e626abe13a566c70164552cf8a42644f270cb0dec55df050c1518f5a71c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}