{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "196632465",
    "entityType": "User",
    "nonce": "0x3a0d90b81a0a003c9d86388612e2cc711c9ae88134c1f370362c2910e333ce60",
    "signature": "0x1ad4dab7e61632ce9dd3808c22279bd18ce61e32cc10232c0abceeb866723e3f6c0e6b03419ecf480dfdd4dde534a3caf80b21603a7b5dd82b42c58596b6d3471b",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}