{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x91e3096a7b48ce895c0ba23fca6b395f4219e9ef8286cd7a54e163c17c49143f",
    "signature": "0x5d166435105b1c8f72df512d5ea29009b3c60496ed5bf9ea7180de3ddcf01bbb1c817559825923dfc1f496bedffcd4db7bb1d7782cb0c2b96cd7a8c46bf3cf671b",
    "signer": "0x60495664C60cF8427e991465f31ABe2F9dC345A5",
    "userId": "696978255"
  }
}