{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0x7531edd3d7c9dc02925657b28c86e85fbe61e2ff6fbb755633250acefffde024",
    "signature": "0xf873af81114e9e0e855c9a533c3bcca12969509600ea1be816811cfbbe11187a59edc50437c8c5e035ee2ff3f7aa50da9b7ee4b35f561afb0a123467e1bd06e21c",
    "signer": "0x16673cB88841366727f4827ecf48a720c8323085",
    "userId": "721569387"
  }
}