{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "743925647",
    "entityType": "User",
    "nonce": "0x84aa33788a27b20a603f5f4c445b89253c2d31162e89703b065e48772d928ace",
    "signature": "0x11e5584863708f9986c8ea5d566807010408f88f95b249fc6311607f40b6a44e241dec330c496421788fce932034216c92ccad657c1adbefc87dd47e7f60659d1c",
    "signer": "0xb15e0969937058c681E67343137f40F72F50d99F",
    "userId": "790717795"
  }
}