{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x8aa515e80d667efc1ed89d4701d1b6c08119b7552620c6dfb47f697bfcbe974a",
    "signature": "0xfbcf6ca5f71ff151d2cef2cfcff9dbfeb4e95b6451e22a86132f32fa1e8476bb40f6afd50dcf712272096404ccebd3b91c75c9e50deb7c6d39c1b3fd1d488f561c",
    "signer": "0x88ad765B72fb060B3adbae1FA44A6C64722E1781",
    "userId": "236177"
  }
}