{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "639560021",
    "entityType": "User",
    "nonce": "0xd3680bf2e8ee6dd56279ec798bb3f5e5fa1f4ea6d97e11a8165ca3002b9ef2ef",
    "signature": "0x19c9f8dfb9419b16e9765600e2363802ef470af88ef82a45d04b93ab65ff27f05ea55a1bfaccde0e56c916f30083d0886bd8012342cafe7fe9851fba22e557581c",
    "signer": "0x98fC2b30E6e70e62dB2b5fAE7b0292DE3D4323Bf",
    "userId": "480962013"
  }
}