{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16758",
    "entityType": "User",
    "nonce": "0x86719d3591e820854765fa9028c8d352ac3b1ee148cb0a9ecb16dea279adcafd",
    "signature": "0xc6b28aa731ba0bfb7caea1e560a7a3fda9c16fcc51d9cd2c0d67808b8613d8666b86d1f8528ba68d9789ad148ea4f999c6183a056f1a3f866aaecbb7f2c8698f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}