{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x273e10b2b09db60da7639ecdfba4a1bc0035e63d1fb4ac15e6eff3eb6f103b81",
    "signature": "0x13334cdf5b06855847b64ad3c22c40e6804b50645a3adf9a29de288446fc9f947b87c1875e952dcad4e9a4d4959766ef3c1cff307a5f7fa94c5f83bd14ba3e721b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}