{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x823962fae4d62b44737e315ecbaedaa8ddf35372a7f6e4ece583e1b1bcc26169",
    "signature": "0xa1ef0c9201af2d521f63794246d18bdcd7d3ebf661032505f59f6645cd8a96a8317a1e9ebebbe425d32d31800108ec147860fafc62adabddc889d72d11175fc01c",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}