{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43431",
    "entityType": "User",
    "nonce": "0x1a3bdf75b80c68065caf758fd24d419b1d9cb0776ef6682814b2a7ba939116d2",
    "signature": "0x977476ebe07cb15ad8389e2f6375cf0c5238af6c9441e2ba33fcb09b0bed164d19a55bcb37acbf35dc495378c8e96bbe9b63525ca7259a834048adabcac5e9321c",
    "signer": "0x13839b1F022D94fAb7C05558747a2F686429366D",
    "userId": "133653253"
  }
}