{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x10d14573edd259205a64634ef804a437c78742ab016c0b5e014f18c56df553c2",
    "signature": "0xa26b32c4b3a03c2918473353f8952da08a3dbda7c408569ee2d79bef67a35878462bb679474769ec276f0ca223b2937524550bf76dec0464699399c47859b50c1c",
    "signer": "0xd721F9AD69261A8300e6Bbe63C1f5464A5C60365",
    "userId": "67097366"
  }
}