{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1720339",
    "entityType": "User",
    "nonce": "0x25aeede635eb02577172eef7c4fd33a11b6dab169af5c04c2ba42359cc5f431c",
    "signature": "0xa9c405ed41388424e3e53fc200140dc0ebd2eeaa29e7c9671fc0ab97dad9d30d03fc3bd256153e0b2e81f978c258b6067d05f5d3acc7ea1a3e3c323e5c9ddabf1c",
    "signer": "0xF0b189d63dF83744c2388d801b25e9bc50F9AE64",
    "userId": "325461301"
  }
}