{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x11332a36af34b50f5ba6e9847dce9a2c44d38c89bace7777f1fff01586cfc9bf",
    "signature": "0x581c2d4a5354f05eb04cf03b19077cd86d84bc658b55d9b71f096263490465122b0c08c9452546230c40675ddc3561bf03edee93301f6fe7c6442a2b0a8ea7de1b",
    "signer": "0x3c30507939bFBf87FAC58ff7512A140BdE48C0Cb",
    "userId": "216427183"
  }
}