{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755434006",
    "entityType": "User",
    "nonce": "0xb50dd0dbbeebde55ab8f33657ffa60c09a6e0cdf44427b4d50a03a3f63889d13",
    "signature": "0xc90c67f712f11c5e3f94da18d74b3802a9cefe596593fe47e34fe1804eb0741569f4da9878a8afc5352426ac114a0b0b25bfa65b4aa3709d3c9e690ce8e2793b1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}