{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "419183",
    "entityType": "User",
    "nonce": "0x5f1fbf6d11d340b79d736954085c639f96097a37633c5b299acdd3c4809c5d9e",
    "signature": "0xe67798361a31055c427e9f7a03c2a0b287d6e7a7e24aaeead1004201e88c5cde7eabe555f8de1a4b62e1fb312d98fdfe262706b16f692bca90952e2f53f54b6b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}