{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10842",
    "entityType": "User",
    "nonce": "0x4f9a49eb0223a2ba01dde94ba2845403d09a616204185143ae0300b0845f353e",
    "signature": "0xf9597ed509fe0200ad02a9329b45b0a13ff709d1f126d10f77aab260a94d1eb220c683056bb1b8027bb3f9782e6d98fa94648288d0d1147d990408282b7432061c",
    "signer": "0xeC1219421eB7c3f9Ae2846E885f45BDb4509ccF8",
    "userId": "892020777"
  }
}