{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x592573569d78e14c1a3e228f6aed85eec3b98557356e37bb87caffa38532ca48",
    "signature": "0xb9ce0da29d132093bb4f94b913ad929b5fb6ffdfdc7466d66d176a4be223c1ec3a0d86253aa2e2b1c03f0668710d8a81b24a548a12b709d6b52d6acbf69816da1c",
    "signer": "0x042e9C9345F229BdAE728dE8D319aB57E5E8BEb9",
    "userId": "739112615"
  }
}