{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0b9fdcbbdd566500e13e08834e0ca0694962c4978d0c7ae50747a99a6a588e54",
    "signature": "0xc1d2e271cf1bf022c1ca63c98d22dcb5c84ba96f1d85d68f6544ee9858be095a001e1832f9e1987325d7f4357f803b4979289a847f484a2209c2380dca9907c61b",
    "signer": "0x8509FA910112951c1cCF369302cC2511fB4523c8",
    "userId": "770559151"
  }
}