{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x399711caa14a5083701f241ed7c3c025d9eeb7fb9373422c8330b690fd8b68d2",
    "signature": "0x6369339875a8e28cd1c9aa721e7647c8ecc7043030160c2c5aac3716c191e6c91e3e80b35214e2c4cb17ce0ce05fd248c6b8b06ce92268199feaa24d47c798c91b",
    "signer": "0xA13d09834D8844feeb4A161b230F2171B04a1cd0",
    "userId": "843453110"
  }
}