{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328306",
    "entityType": "User",
    "nonce": "0x304354457350452493c30eb67d46fd3b4be19ab460a8136b1eed40ec62a26a97",
    "signature": "0x81fda5bf26a6f33937f19611e31e9241ccadc66a33e3cff33862910417fe5cfd7e3c671c74e87e853f70a38380ff500e8ef310948af4a6a08657c7e1db3f977f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}