{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x60c7c90c974236a7bf5de66813c77d39fa3950204eafddc15818b462b7b7118e",
    "signature": "0xaeee0e1cf1a0445fa3cd0ef3bcd72857f375cda18492a49ff3e3511a6fa723812c23c6faaba59dfeb9505f3af0ccc19d1e406950bea549dd46eb934f3550ee101b",
    "signer": "0x5AF75f75Be2Eb7585A99eF3031E963015A349B8A",
    "userId": "691516136"
  }
}