{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "275635",
    "entityType": "User",
    "nonce": "0x78da9400178fda616ccd9c0c90275c6fc4771e632bf4e6e3782bfac3a7407911",
    "signature": "0x4fdb8bdf03876d42e10eb5a833ee9757c278a78a745191bf1d7c1b5984ce81ff6f500cdad6df54b71c95119980f51890883e57f4d577bdbd34f702d14354a8ad1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}