{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200745",
    "entityType": "User",
    "nonce": "0xd92afeaf6b1397fcb21c9c32bc39b74bd0505854dc8244b157de81311a5175f3",
    "signature": "0x65110cc5cbeac4a29918dc6b694fbd2f77a0712700f63eba7c31284369ecad040b27b554d2f32348a42feaf59e1ab8053f6146b4819b3c3e15802eb6addb30611c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}