{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "455300469",
    "entityType": "User",
    "nonce": "0xdfc6ff7bbab6e22aa93ec644980fdd8394d9aacae5407eb1cb646191c84539ae",
    "signature": "0x3875bafae2661fdc43ad3a55cd329269ce066e6075e5a0d3009f4175a0f9de6321c3f43857e29108266ffa0c1307d2d45821c1e52fa6ec817c7b53df97003b9a1c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}