{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10373",
    "entityType": "User",
    "nonce": "0x2170644fac5c72a180eb97234f31cdfe36e7994d0de87ee2476dd6d320e1b8f4",
    "signature": "0xf7ad369c519f6a165063d0e28f543c45565b84e998e9615a17306d1e8230714956c529af1d1b58f2d79c24b3cb17dcb6fadd3749848ee56f360fd2428f8ca0171c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}