{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xd0cc3f50942dea43a11531e6b55e048e8bb3b2d3d07fbaca273bb7d8459d3004",
    "signature": "0x48fbf62b63edb7f7a6c7e1c2ed7cdd352adae77940a0db4576955c45eab64e4d3f800de3f4094f61aa3409daa097aa3749347acb0aba978587d93fddf3ae855c1b",
    "signer": "0x60495664C60cF8427e991465f31ABe2F9dC345A5",
    "userId": "696978255"
  }
}