{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x895e50fab399e094e2f90a498e63e0ea667ed056245177b39e0a3b501f441db6",
    "signature": "0x67b0de35243423c211a79053c42174298e7c550472dba24f4a6f7007a2e75a9e5dab1b5ca26c162e607aebac1d194ae511dcbf26566ab09d0d004508ae7c66ea1c",
    "signer": "0x883B776E8D7a14972084D8BAeaeDFD50d18870EA",
    "userId": "18198663"
  }
}