{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcd954e468295542e3ed1d520a1d2cc290b95ecfe182eca2ed2c567d0bdb7619e",
    "signature": "0x5c063f0318197e577b0728e0b689c1d62923b03a85077366ccf4daa75b5bd9690b98c383f3d343a2daebcfdbb3e69b596f091fff76b8f5a126814735ccd8f5611c",
    "signer": "0x1Cb865DdBA351F970220F715B0aC633F06fe38f7",
    "userId": "953308750"
  }
}