{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "789718487",
    "entityType": "User",
    "nonce": "0xf425e1840dc8dbbfdb688a0f45ae89b80af7ac587fe0ac32ac5e8ecfa051789a",
    "signature": "0x081002bd790689e39c6c5baedc788cbaf812d2ce7422046d093e8316c0999fad66450f6dc29bd30fea67c6c9acd2c298cd6c499961b9ac4013eb0aed030a8b9f1c",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}