{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103249",
    "entityType": "User",
    "nonce": "0xff630fac1628962892afcc4096a32fdcb309f8f38bd852c7a0d3802e72a56c57",
    "signature": "0x8c56c368ca2e0d219c8f3c11f81fa80bded28c50acf6f2a86adaa08dfd59df1e1c3bfb86890b597d88fe7d3ddac9e3d523708502c5d6425ce6a0b8c69963a3dd1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}