{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139809",
    "entityType": "User",
    "nonce": "0x25318484ab36d8561276a74f38600e554a1a0ab9bc5282b05fdc7310ef6ed101",
    "signature": "0xa55bfe8f04f79de30fa75d72bb33466d56a058155833c0cdf804fc2c17be897f6ea130cec944c1a3bf50263086a1f4d8e0a23821ef56bddacc1e60c9c26d610c1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}