{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55e8d4582d003a762e2dca710eae5c73e7d4e4e3488e783d86ad36da327873c8",
    "signature": "0xcb7b78f80059eeacfe72e8b9e1bc6879f01867ea34f7cd3ffed4aa4b8d11d99520d19a6b9c6c1f44fc84982ab198e3af2fafd0cc3d614d69582310514286165b1b",
    "signer": "0xcB43309996a219bE26CA3f52081196731cffd0Cf",
    "userId": "590410636"
  }
}