{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "340557",
    "entityType": "User",
    "nonce": "0x126df0ccbd658b6f6a15baeee3bfb4db375a79dac7f4a14ac7d016ac7be15fd6",
    "signature": "0xf95234ea139da82cd65e0e4489b5f8f555c689108fcd36545483e3cf52c89c2462bad4d849f49271e2bd793f17addd7f89f55a9e87b4d76ad5778a0eba13d5ce1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}