{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55554",
    "entityType": "User",
    "nonce": "0x77c64449200a86d396cc2a9128bae015e1792c86a10d5f43a6ead47d5e9e2155",
    "signature": "0xee42e2527a90435170dcf85091ecaa46b8deeb643cc498c8f38aca36d11d3bc47707fcf804a93d07a1ac28514084a4c8206a788c9bab231a637819ab361de5ae1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}