{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77b920b4aa38aec6bb5ca9b70d918b44f9eb47e34e5560dcd8a80ece9fcb29ba",
    "signature": "0x1ff1e99d93d1cb6e156a64b67384237e53c479d2df61997edd5b59a1fc2439004584e9c118b8915fac5ceeb1b55a4c9559781e9a3d6748474891beaf66bfdf2e1c",
    "signer": "0xfcc1ebd834F0a4e20443BB7a77c345084d78bd3A",
    "userId": "465161300"
  }
}