{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xec393db6d63ec0bcdc6d094aa9684ffeac5aa3367b4c486aefe9906fa953de28",
    "signature": "0x5c191225acd5c95a025aa35021401a26d400b9e7356e87333d244a111a542d5a15142edc475a0b4066371e36fdcfc2fdb423bf5c2d92844bcc5b3cc7244c78051b",
    "signer": "0x52C54744FeC93B156A460Db7FccF10e22b6FEdf0",
    "userId": "194963084"
  }
}