{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15979",
    "entityType": "User",
    "nonce": "0x8d8460891dde565d0ec0bd210c5487ccdd982decede0d186fa90c67d3b44dabf",
    "signature": "0xb6215684ab6f34cee33ea81bacbb211bd580e1739c167cb47259087e120e2b453e66dda55ad7634ad228735a36ac1425b0757af998476dfd62e752e30b1a10cc1c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}