{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4765928487c04ccf4ebb97e870dab1db614fea605b40b2d745998986e63161c8",
    "signature": "0xca677d2606b03100150d1bc650017ed83fbab12f4b833c80c034f7985671fe2f0d198fee57ea61300035e312b21604ed163770165f8399664e134f74cf7739a11b",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}