{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe2064c1fa2d56ae55c327e5c58a51fb2045618e5cac874998e382702bb0bd534",
    "signature": "0x1bdb56f8b120dc1dc4b4ddbc462fcc8f9590ac7d6ac3e96d5d7477c4028c5eed1b3560909205bc315dcd78e67ef6d66f3891e6c73f86ee1afb84221b9200c27d1b",
    "signer": "0xD6861ef3B0A1d77611dD56ADFb7F35C07576A7A4",
    "userId": "606371472"
  }
}