{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfa103f0af1c87dd124a752a697f1fef30f6760de6f1a4fdb0f11dfad6fa4c686",
    "signature": "0x04675da6523f9826bb96b8656f119906d68ae084d471a1104784708a7f63a37e3e3e98b0bd74df7a9cab780b00ea724520aecb74c97224577b96e9de7314a35a1c",
    "signer": "0x2C03Cf112F16b042DD4D178637Bc27eff97B9ca0",
    "userId": "99878403"
  }
}