{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187545",
    "entityType": "User",
    "nonce": "0xf50ff1cb9002d401801ff220758cc188b3203f0ef283f7a42212224e4e0d950d",
    "signature": "0xf7521c43f7712db0b1f694262d6e3631eb54bd997e13a1f342ad1d5831330e1c446275bca31f37b657ebd7803ee761be52eeed8dd79d86079794e43364a972591c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}