{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57fa3b923e52cf17723981734ecf4815a0f9e354160e8ce43af6924814ff2013",
    "signature": "0x9138cdf2f07f4bcc6d5ec37283ecee4df6bd3edbaa5aeaa67def3c009b090bdd3ec054065e8365c16d6aedd2b307ce609249aad5da3e952f84e58d68e91984a31b",
    "signer": "0x191A921fB1E29C06eA43703831E40e484b09d557",
    "userId": "187420095"
  }
}