{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "159054652",
    "entityType": "User",
    "nonce": "0xc4a4d2b5bf91418ef92cc80c9fbca0e8cf905e496d09d6ca8c6578cca7dc3a90",
    "signature": "0x230a330891f699b48f0d3e0f802f45a8e222f211dc89453289cbe5514c58b5eb7b2ec134124c6851419072c90d0150c163f980a7fccab8dcb6ae00acc4c459fe1b",
    "signer": "0x77E50fFfC1Ae26283bE0FfAf08cfad861687c690",
    "userId": "909677694"
  }
}