{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273798228",
    "entityType": "User",
    "nonce": "0xc5c3b362ba13b7036f252e19a5347d6966d0627a993e6faf48b39bc8e5972308",
    "signature": "0x21602282fe25e19c3168769dba391fd8616a060706a62c1fee2e716c7eb7a9d228ed6c9ee9ee8fcc80f445e5447f6a3ae6f2e5dc530e0c62d0e85c9e64e2a27b1c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}