{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "731078861",
    "entityType": "User",
    "nonce": "0xf5a4a7a909a7d573767cc7711f8ec16bc1af14455a2f95cb9ca4e9c7ac0f5f34",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}