{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880677",
    "entityType": "User",
    "nonce": "0x22a894b5aff764a1e1d2f01380d7f8a0c2d8db5c6ac90b2b441119348a565712",
    "signature": "0x777f4a6e25d61918106744c0d3266ba78471bcd86e041bc6b9bebac7e67a24093ea14089485662b1477451a6f355ddcc16ab86d76d79ca04cf2377b20927c1301c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}