{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778583001",
    "entityType": "User",
    "nonce": "0x651b2f1f774772c2681ff1073855585b9bf3670bd6f2d3ef22ecce9c0ead356c",
    "signature": "0x51d4384328b4ebcaf1a764df953e9e2734300fbfd59dde02a91768bfe6d44a4162d0dcf47b8e246da16e51fcd31aeeca74776808f0e2fa73a6510896f83ef8241c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}