{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe97589c872f1d91be594d6b8ed6a0aa30da3302e8ce74ab42cd0d863e9181c11",
    "signature": "0xe7a40ed494a7daa3d9e2cfed859ce82095eaeea54cd481163bdb48dff58777337ca3c2ba54c17a70a2fcbac11b426f5cd6d49be4817dc24b1b66edab28cca3071b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}