{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329318308",
    "entityType": "User",
    "nonce": "0x5aed6e56c0aecce58a26ca1e546264abcbc1a221a0ac71a32a8818e90e86f7f1",
    "signature": "0x4c98c5e587c0b2d03f0a03116bb744be93dcb5e1367e54c20a80e8e3f43dc1387878717f5c7a7c84fe7b0ae9ecb9cb86cb6cf390b809280a2f102afeb141d32f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}