{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254245",
    "entityType": "User",
    "nonce": "0x2d5f9ee2f25148bcc35fbdb8fdfc2be2c3d788a2f3cfbec80a61812894f3447a",
    "signature": "0xc7bcf08a09d9bc8cef38532d911cc108beb64ca1fe7d2fbb80638df9a56dd62468cdae9d352318614a84b0a4986913bd3473944f38021281d27f012b323d757c1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}