{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x25d2079ba60aff8d88863457aebba50dce148313b7d321ca78be27658f4f1bb3",
    "signature": "0x48549f41479e953d9203ff5045b6e164175250e16739acfd51afcee0f20ede890ebc3040993b7ff47a97c16823a45c5bd6bc102fdc1c43158e35b0ec0493068b1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}