{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "133842",
    "entityType": "User",
    "nonce": "0x6721c9b286cc539fc95cd08d0a9982dad65a2d3dcdb0a40809263b56380159a7",
    "signature": "0x5b3f0a15f84501614812c2a0183cd82fbb10cfb7173fee8d17e198d7d0b4b9fb013ad9765b1d1d32d23d631d5ac65a4e173cc73f8b43f588a3b593f44fb40d791c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}