{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8f4a93a89865acfa95f38f0208c2712c2324fdc3ca266520c7fbcf0cba6d123a",
    "signature": "0x31879f2ff682e1cfa5d128de3cfd66a2410e7c8a4fcf44b7fd40f8760b7e43f20e0c8170dc496551b4d9b7073bd0263955daf543ad8a6533de3c786d84f99d931c",
    "signer": "0x3abD2Ab0E86E439F2c9F25bC848152f0CA2F98E8",
    "userId": "33641458"
  }
}